56942109 has 40 divisors (see below), whose sum is σ = 100594560. Its totient is φ = 31407264.

The previous prime is 56942099. The next prime is 56942113. The reversal of 56942109 is 90124965.

It is not a de Polignac number, because 56942109 - 2⁹ = 56941597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56942309) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 14712 + ... + 18174.

It is an arithmetic number, because the mean of its divisors is an integer number (2514864).

Almost surely, 2^56942109 is an apocalyptic number.

It is an amenable number.

56942109 is a deficient number, since it is larger than the sum of its proper divisors (43652451).

56942109 is a wasteful number, since it uses less digits than its factorization.

56942109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3511 (or 3502 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 56942109 is about 7545.9995361781. Note that the first 3 decimals coincide. The cubic root of 56942109 is about 384.7197803517.

The spelling of 56942109 in words is "fifty-six million, nine hundred forty-two thousand, one hundred nine".