421200537 has 4 divisors (see below), whose sum is σ = 561600720. Its totient is φ = 280800356.

The previous prime is 421200529. The next prime is 421200589. The reversal of 421200537 is 735002124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 421200537 - 2³ = 421200529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421200137) 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, 70200087 + ... + 70200092.

It is an arithmetic number, because the mean of its divisors is an integer number (140400180).

Almost surely, 2^421200537 is an apocalyptic number.

It is an amenable number.

421200537 is a deficient number, since it is larger than the sum of its proper divisors (140400183).

421200537 is a wasteful number, since it uses less digits than its factorization.

421200537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140400182.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 421200537 is about 20523.1707345624. The cubic root of 421200537 is about 749.6001050388.

The spelling of 421200537 in words is "four hundred twenty-one million, two hundred thousand, five hundred thirty-seven".