1341142021 has 4 divisors (see below), whose sum is σ = 1373852844. Its totient is φ = 1308431200.

The previous prime is 1341142003. The next prime is 1341142027. The reversal of 1341142021 is 1202411431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1202411431 = 13 ⋅92493187.

It can be written as a sum of positive squares in 2 ways, for example, as 33524100 + 1307617921 = 5790^2 + 36161^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1341142021 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1341142021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1341142027) 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, 16355350 + ... + 16355431.

It is an arithmetic number, because the mean of its divisors is an integer number (343463211).

Almost surely, 2^1341142021 is an apocalyptic number.

It is an amenable number.

1341142021 is a deficient number, since it is larger than the sum of its proper divisors (32710823).

1341142021 is an equidigital number, since it uses as much as digits as its factorization.

1341142021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32710822.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1341142021 is about 36621.6059314717. The cubic root of 1341142021 is about 1102.7868785870.

Adding to 1341142021 its reverse (1202411431), we get a palindrome (2543553452).

The spelling of 1341142021 in words is "one billion, three hundred forty-one million, one hundred forty-two thousand, twenty-one".