42000530 has 64 divisors (see below), whose sum is σ = 92752128. Its totient is φ = 13474560.

The previous prime is 42000529. The next prime is 42000559. The reversal of 42000530 is 3500024.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32252 + ... + 33528.

It is an arithmetic number, because the mean of its divisors is an integer number (1449252).

Almost surely, 2^42000530 is an apocalyptic number.

42000530 is an abundant number, since it is smaller than the sum of its proper divisors (50751598).

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

42000530 is a wasteful number, since it uses less digits than its factorization.

42000530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331.

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 42000530 is about 6480.7815886666. The cubic root of 42000530 is about 347.6041266207.

Adding to 42000530 its reverse (3500024), we get a palindrome (45500554).

The spelling of 42000530 in words is "forty-two million, five hundred thirty", and thus it is an aban number.