421087530 has 16 divisors (see below), whose sum is σ = 1010610144. Its totient is φ = 112290000.

The previous prime is 421087493. The next prime is 421087531. The reversal of 421087530 is 35780124.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 14036251 = 421087530 / (4 + 2 + 1 + 0 + 8 + 7 + 5 + 3 + 0).

It is not an unprimeable number, because it can be changed into a prime (421087531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7018096 + ... + 7018155.

It is an arithmetic number, because the mean of its divisors is an integer number (63163134).

Almost surely, 2^421087530 is an apocalyptic number.

421087530 is an abundant number, since it is smaller than the sum of its proper divisors (589522614).

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

421087530 is a wasteful number, since it uses less digits than its factorization.

421087530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14036261.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 421087530 is about 20520.4173934158. The cubic root of 421087530 is about 749.5330604614.

The spelling of 421087530 in words is "four hundred twenty-one million, eighty-seven thousand, five hundred thirty".