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1342160861 = 2946281409
BaseRepresentation
bin100111111111111…
…1011111111011101
310110112111211120112
41033333323333131
510222043121421
6341103055405
745155115266
oct11777737735
93415454515
101342160861
11629684358
123155a1565
131850aa232
14ca37796d
157cc6c45b
hex4fffbfdd

1342160861 has 4 divisors (see below), whose sum is σ = 1388442300. Its totient is φ = 1295879424.

The previous prime is 1342160843. The next prime is 1342160867. The reversal of 1342160861 is 1680612431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1680612431 = 2693624067.

It can be written as a sum of positive squares in 2 ways, for example, as 696696025 + 645464836 = 26395^2 + 25406^2 .

It is a cyclic number.

It is not a de Polignac number, because 1342160861 - 230 = 268419037 is a prime.

It is a super-2 number, since 2×13421608612 = 3602791553600522642, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1342160867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23140676 + ... + 23140733.

It is an arithmetic number, because the mean of its divisors is an integer number (347110575).

Almost surely, 21342160861 is an apocalyptic number.

It is an amenable number.

1342160861 is a deficient number, since it is larger than the sum of its proper divisors (46281439).

1342160861 is an equidigital number, since it uses as much as digits as its factorization.

1342160861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46281438.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 1342160861 is about 36635.5136581978. The cubic root of 1342160861 is about 1103.0660632841.

The spelling of 1342160861 in words is "one billion, three hundred forty-two million, one hundred sixty thousand, eight hundred sixty-one".

Divisors: 1 29 46281409 1342160861