42311904 has 48 divisors (see below), whose sum is σ = 115903872. Its totient is φ = 13490048.

The previous prime is 42311903. The next prime is 42311921. The reversal of 42311904 is 40911324.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42311903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7374 + ... + 11789.

It is an arithmetic number, because the mean of its divisors is an integer number (2414664).

Almost surely, 2^42311904 is an apocalyptic number.

It is an amenable number.

42311904 is an abundant number, since it is smaller than the sum of its proper divisors (73591968).

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

42311904 is a wasteful number, since it uses less digits than its factorization.

42311904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19199 (or 19191 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 42311904 is about 6504.7601031860. The cubic root of 42311904 is about 348.4610087794.

The spelling of 42311904 in words is "forty-two million, three hundred eleven thousand, nine hundred four".