421361938 has 16 divisors (see below), whose sum is σ = 658016280. Its totient is φ = 202116096.

The previous prime is 421361929. The next prime is 421361939. The reversal of 421361938 is 839163124.

It can be written as a sum of positive squares in 4 ways, for example, as 301612689 + 119749249 = 17367^2 + 10943^2 .

It is a junction number, because it is equal to n+sod(n) for n = 421361897 and 421361906.

It is not an unprimeable number, because it can be changed into a prime (421361939) 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, 14031 + ... + 32242.

Almost surely, 2^421361938 is an apocalyptic number.

421361938 is a deficient number, since it is larger than the sum of its proper divisors (236654342).

421361938 is a wasteful number, since it uses less digits than its factorization.

421361938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46461.

The product of its digits is 31104, while the sum is 37.

The square root of 421361938 is about 20527.1025232496. The cubic root of 421361938 is about 749.6958399248.

The spelling of 421361938 in words is "four hundred twenty-one million, three hundred sixty-one thousand, nine hundred thirty-eight".