1008642 has 16 divisors (see below), whose sum is σ = 2105280. Its totient is φ = 321552.

The previous prime is 1008617. The next prime is 1008659. The reversal of 1008642 is 2468001.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3517 + ... + 3792.

It is an arithmetic number, because the mean of its divisors is an integer number (131580).

2^1008642 is an apocalyptic number.

1008642 is an abundant number, since it is smaller than the sum of its proper divisors (1096638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1008642 is a wasteful number, since it uses less digits than its factorization.

1008642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7337.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1008642 is about 1004.3117046017. The cubic root of 1008642 is about 100.2872408039.

The spelling of 1008642 in words is "one million, eight thousand, six hundred forty-two".