42624040 has 16 divisors (see below), whose sum is σ = 95904180. Its totient is φ = 17049600.

The previous prime is 42624013. The next prime is 42624041. The reversal of 42624040 is 4042624.

It can be written as a sum of positive squares in 2 ways, for example, as 42432196 + 191844 = 6514^2 + 438^2 .

It is not an unprimeable number, because it can be changed into a prime (42624041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 532761 + ... + 532840.

Almost surely, 2^42624040 is an apocalyptic number.

42624040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42624040 is an abundant number, since it is smaller than the sum of its proper divisors (53280140).

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

42624040 is a wasteful number, since it uses less digits than its factorization.

42624040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065612 (or 1065608 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 42624040 is about 6528.7089075866. The cubic root of 42624040 is about 349.3157789222.

Adding to 42624040 its reverse (4042624), we get a palindrome (46666664).

The spelling of 42624040 in words is "forty-two million, six hundred twenty-four thousand, forty".