421021082 has 16 divisors (see below), whose sum is σ = 681300072. Its totient is φ = 194388480.

The previous prime is 421021061. The next prime is 421021093. The reversal of 421021082 is 280120124.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 354907921 + 66113161 = 18839^2 + 8131^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115019 + ... + 118622.

Almost surely, 2^421021082 is an apocalyptic number.

421021082 is a deficient number, since it is larger than the sum of its proper divisors (260278990).

421021082 is a wasteful number, since it uses less digits than its factorization.

421021082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233713.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 421021082 is about 20518.7982591574. The cubic root of 421021082 is about 749.4936327184.

The spelling of 421021082 in words is "four hundred twenty-one million, twenty-one thousand, eighty-two".