42400332 has 36 divisors (see below), whose sum is σ = 115424400. Its totient is φ = 13046112.

The previous prime is 42400321. The next prime is 42400357. The reversal of 42400332 is 23300424.

42400332 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 (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

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 11 ways as a sum of consecutive naturals, for example, 44832 + ... + 45767.

Almost surely, 2^42400332 is an apocalyptic number.

It is an amenable number.

42400332 is an abundant number, since it is smaller than the sum of its proper divisors (73024068).

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

42400332 is a wasteful number, since it uses less digits than its factorization.

42400332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90622 (or 90617 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 42400332 is about 6511.5537316373. The cubic root of 42400332 is about 348.7035903866.

Adding to 42400332 its reverse (23300424), we get a palindrome (65700756).

The spelling of 42400332 in words is "forty-two million, four hundred thousand, three hundred thirty-two".