42320536 has 8 divisors (see below), whose sum is σ = 79351020. Its totient is φ = 21160264.

The previous prime is 42320527. The next prime is 42320561. The reversal of 42320536 is 63502324.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 42320536.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2645026 + ... + 2645041.

Almost surely, 2^42320536 is an apocalyptic number.

It is an amenable number.

42320536 is a deficient number, since it is larger than the sum of its proper divisors (37030484).

42320536 is a wasteful number, since it uses less digits than its factorization.

42320536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5290073 (or 5290069 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 42320536 is about 6505.4235834417. The cubic root of 42320536 is about 348.4847035368.

The spelling of 42320536 in words is "forty-two million, three hundred twenty thousand, five hundred thirty-six".