420013982 has 4 divisors (see below), whose sum is σ = 630020976. Its totient is φ = 210006990.

The previous prime is 420013969. The next prime is 420013991. The reversal of 420013982 is 289310024.

It is a semiprime because it is the product of two primes.

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, 105003494 + ... + 105003497.

It is an arithmetic number, because the mean of its divisors is an integer number (157505244).

Almost surely, 2^420013982 is an apocalyptic number.

420013982 is a deficient number, since it is larger than the sum of its proper divisors (210006994).

420013982 is a wasteful number, since it uses less digits than its factorization.

420013982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210006993.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 420013982 is about 20494.2426549507. The cubic root of 420013982 is about 748.8955489006.

The spelling of 420013982 in words is "four hundred twenty million, thirteen thousand, nine hundred eighty-two".