421145236 has 12 divisors (see below), whose sum is σ = 737578912. Its totient is φ = 210408408.

The previous prime is 421145209. The next prime is 421145269. The reversal of 421145236 is 632541124.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35190 + ... + 45613.

Almost surely, 2^421145236 is an apocalyptic number.

It is an amenable number.

421145236 is a deficient number, since it is larger than the sum of its proper divisors (316433676).

421145236 is a wasteful number, since it uses less digits than its factorization.

421145236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82110 (or 82108 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 421145236 is about 20521.8234082647. The cubic root of 421145236 is about 749.5672976655.

The spelling of 421145236 in words is "four hundred twenty-one million, one hundred forty-five thousand, two hundred thirty-six".