494387642 has 64 divisors (see below), whose sum is σ = 925240320. Its totient is φ = 193314816.

The previous prime is 494387633. The next prime is 494387701. The reversal of 494387642 is 246783494.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2158784 + ... + 2159012.

It is an arithmetic number, because the mean of its divisors is an integer number (14456880).

Almost surely, 2^494387642 is an apocalyptic number.

494387642 is a deficient number, since it is larger than the sum of its proper divisors (430852678).

494387642 is a wasteful number, since it uses less digits than its factorization.

494387642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495.

The product of its digits is 1161216, while the sum is 47.

The square root of 494387642 is about 22234.8294798948. The cubic root of 494387642 is about 790.7196572071.

The spelling of 494387642 in words is "four hundred ninety-four million, three hundred eighty-seven thousand, six hundred forty-two".