5109642 has 20 divisors (see below), whose sum is σ = 11449746. Its totient is φ = 1703160.

The previous prime is 5109631. The next prime is 5109661. The reversal of 5109642 is 2469015.

5109642 is a `hidden beast` number, since 5 + 10 + 9 + 642 = 666.

5109642 is nontrivially palindromic in base 5.

It can be written as a sum of positive squares in only one way, i.e., 5103081 + 6561 = 2259^2 + 81^2 .

It is a super-2 number, since 2×5109642² = 52216882736328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 15609 + ... + 15932.

Almost surely, 2^5109642 is an apocalyptic number.

5109642 is an abundant number, since it is smaller than the sum of its proper divisors (6340104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5109642 is a wasteful number, since it uses less digits than its factorization.

5109642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31555 (or 31546 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 5109642 is about 2260.4517247665. The cubic root of 5109642 is about 172.2384694735.

The spelling of 5109642 in words is "five million, one hundred nine thousand, six hundred forty-two".