423974642 has 32 divisors (see below), whose sum is σ = 785925504. Its totient is φ = 167040000.

The previous prime is 423974633. The next prime is 423974647. The reversal of 423974642 is 246479324.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 423974642.

It is not an unprimeable number, because it can be changed into a prime (423974647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41042 + ... + 50322.

It is an arithmetic number, because the mean of its divisors is an integer number (24560172).

Almost surely, 2^423974642 is an apocalyptic number.

423974642 is a deficient number, since it is larger than the sum of its proper divisors (361950862).

423974642 is a wasteful number, since it uses less digits than its factorization.

423974642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9554.

The product of its digits is 290304, while the sum is 41.

The square root of 423974642 is about 20590.6445260949. The cubic root of 423974642 is about 751.2421738327.

The spelling of 423974642 in words is "four hundred twenty-three million, nine hundred seventy-four thousand, six hundred forty-two".