42564492 has 18 divisors (see below), whose sum is σ = 107593668. Its totient is φ = 14188152.

The previous prime is 42564479. The next prime is 42564521. The reversal of 42564492 is 29446524.

42564492 is a `hidden beast` number, since 4 + 2 + 5 + 644 + 9 + 2 = 666.

42564492 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1182347 = 42564492 / (4 + 2 + 5 + 6 + 4 + 4 + 9 + 2).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 591138 + ... + 591209.

It is an arithmetic number, because the mean of its divisors is an integer number (5977426).

Almost surely, 2^42564492 is an apocalyptic number.

It is an amenable number.

42564492 is an abundant number, since it is smaller than the sum of its proper divisors (65029176).

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

42564492 is a wasteful number, since it uses less digits than its factorization.

42564492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182357 (or 1182352 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 42564492 is about 6524.1468407754. The cubic root of 42564492 is about 349.1530323419.

The spelling of 42564492 in words is "forty-two million, five hundred sixty-four thousand, four hundred ninety-two".