42000512 has 16 divisors (see below), whose sum is σ = 83673150. Its totient is φ = 21000192.

The previous prime is 42000503. The next prime is 42000521. The reversal of 42000512 is 21500024.

It is an interprime number because it is at equal distance from previous prime (42000503) and next prime (42000521).

It can be written as a sum of positive squares in only one way, i.e., 41267776 + 732736 = 6424^2 + 856^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163937 + ... + 164192.

Almost surely, 2^42000512 is an apocalyptic number.

It is an amenable number.

42000512 is a deficient number, since it is larger than the sum of its proper divisors (41672638).

42000512 is an equidigital number, since it uses as much as digits as its factorization.

42000512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328143 (or 328131 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 42000512 is about 6480.7801999451. The cubic root of 42000512 is about 347.6040769636.

Adding to 42000512 its reverse (21500024), we get a palindrome (63500536).

The spelling of 42000512 in words is "forty-two million, five hundred twelve", and thus it is an aban number.