42520000 has 70 divisors (see below), whose sum is σ = 105534968. Its totient is φ = 16992000.

The previous prime is 42519959. The next prime is 42520021. The reversal of 42520000 is 2524.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 39469 + ... + 40531.

Almost surely, 2^42520000 is an apocalyptic number.

42520000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42520000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52767484).

42520000 is an abundant number, since it is smaller than the sum of its proper divisors (63014968).

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

42520000 is an equidigital number, since it uses as much as digits as its factorization.

42520000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095 (or 1070 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 42520000 is about 6520.7361547604. The cubic root of 42520000 is about 349.0313351886.

Adding to 42520000 its reverse (2524), we get a palindrome (42522524).

The spelling of 42520000 in words is "forty-two million, five hundred twenty thousand".