421592 has 16 divisors (see below), whose sum is σ = 798000. Its totient is φ = 208800.

The previous prime is 421559. The next prime is 421607. The reversal of 421592 is 295124.

421592 is nontrivially palindromic in base 14.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 421592.

It is an unprimeable number.

421592 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 in 3 ways as a sum of consecutive naturals, for example, 1034 + ... + 1382.

It is an arithmetic number, because the mean of its divisors is an integer number (49875).

2⁴²¹⁵⁹² is an apocalyptic number.

It is an amenable number.

421592 is a deficient number, since it is larger than the sum of its proper divisors (376408).

421592 is a wasteful number, since it uses less digits than its factorization.

421592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506 (or 502 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 421592 is about 649.3011627897. The cubic root of 421592 is about 74.9832258783.

It can be divided in two parts, 4 and 21592, that multiplied together give a palindrome (86368).

The spelling of 421592 in words is "four hundred twenty-one thousand, five hundred ninety-two".