1427161 has 4 divisors (see below), whose sum is σ = 1441972. Its totient is φ = 1412352.

The previous prime is 1427143. The next prime is 1427191. The reversal of 1427161 is 1617241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1617241 = 953 ⋅1697.

It can be written as a sum of positive squares in 2 ways, for example, as 855625 + 571536 = 925^2 + 756^2 .

It is a cyclic number.

It is not a de Polignac number, because 1427161 - 2¹¹ = 1425113 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1427141) 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, 7260 + ... + 7453.

It is an arithmetic number, because the mean of its divisors is an integer number (360493).

2^1427161 is an apocalyptic number.

It is an amenable number.

1427161 is a deficient number, since it is larger than the sum of its proper divisors (14811).

1427161 is an equidigital number, since it uses as much as digits as its factorization.

1427161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14810.

The product of its digits is 336, while the sum is 22.

The square root of 1427161 is about 1194.6384390266. The cubic root of 1427161 is about 112.5877110219.

The spelling of 1427161 in words is "one million, four hundred twenty-seven thousand, one hundred sixty-one".