420982 has 4 divisors (see below), whose sum is σ = 631476. Its totient is φ = 210490.

The previous prime is 420977. The next prime is 420997. The reversal of 420982 is 289024.

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105244 + ... + 105247.

It is an arithmetic number, because the mean of its divisors is an integer number (157869).

2⁴²⁰⁹⁸² is an apocalyptic number.

420982 is a deficient number, since it is larger than the sum of its proper divisors (210494).

420982 is a wasteful number, since it uses less digits than its factorization.

420982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210493.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 420982 is about 648.8312569536. The cubic root of 420982 is about 74.9470440992.

The spelling of 420982 in words is "four hundred twenty thousand, nine hundred eighty-two".