421693268 has 6 divisors (see below), whose sum is σ = 737963226. Its totient is φ = 210846632.

The previous prime is 421693253. The next prime is 421693271. The reversal of 421693268 is 862396124.

It can be written as a sum of positive squares in only one way, i.e., 418693444 + 2999824 = 20462^2 + 1732^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52711655 + ... + 52711662.

It is an arithmetic number, because the mean of its divisors is an integer number (122993871).

Almost surely, 2^421693268 is an apocalyptic number.

It is an amenable number.

421693268 is a deficient number, since it is larger than the sum of its proper divisors (316269958).

421693268 is a wasteful number, since it uses less digits than its factorization.

421693268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105423321 (or 105423319 counting only the distinct ones).

The product of its digits is 124416, while the sum is 41.

The square root of 421693268 is about 20535.1714869879. The cubic root of 421693268 is about 749.8922914955.

The spelling of 421693268 in words is "four hundred twenty-one million, six hundred ninety-three thousand, two hundred sixty-eight".