42630520 has 16 divisors (see below), whose sum is σ = 95918760. Its totient is φ = 17052192.

The previous prime is 42630503. The next prime is 42630527. The reversal of 42630520 is 2503624.

It is a happy number.

It is a super-2 number, since 2×42630520² = 3634722470940800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42630491 and 42630500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42630527) 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, 532842 + ... + 532921.

Almost surely, 2^42630520 is an apocalyptic number.

42630520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42630520 is an abundant number, since it is smaller than the sum of its proper divisors (53288240).

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

42630520 is a wasteful number, since it uses less digits than its factorization.

42630520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065774 (or 1065770 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 42630520 is about 6529.2051583635. The cubic root of 42630520 is about 349.3334798218. Note that the first 3 decimals are identical.

The spelling of 42630520 in words is "forty-two million, six hundred thirty thousand, five hundred twenty".