420974 has 4 divisors (see below), whose sum is σ = 631464. Its totient is φ = 210486.

The previous prime is 420967. The next prime is 420977. The reversal of 420974 is 479024.

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

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 420974.

It is not an unprimeable number, because it can be changed into a prime (420977) by changing a digit.

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, 105242 + ... + 105245.

It is an arithmetic number, because the mean of its divisors is an integer number (157866).

2⁴²⁰⁹⁷⁴ is an apocalyptic number.

420974 is a deficient number, since it is larger than the sum of its proper divisors (210490).

420974 is a wasteful number, since it uses less digits than its factorization.

420974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210489.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 420974 is about 648.8250919932. The cubic root of 420974 is about 74.9465693520.

Adding to 420974 its reverse (479024), we get a palindrome (899998).

The spelling of 420974 in words is "four hundred twenty thousand, nine hundred seventy-four".