12920842 has 16 divisors (see below), whose sum is σ = 21384000. Its totient is φ = 5806240.

The previous prime is 12920839. The next prime is 12920857. The reversal of 12920842 is 24802921.

It is a self number, because there is not a number n which added to its sum of digits gives 12920842.

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, 1342 + ... + 5257.

It is an arithmetic number, because the mean of its divisors is an integer number (1336500).

Almost surely, 2^12920842 is an apocalyptic number.

12920842 is a deficient number, since it is larger than the sum of its proper divisors (8463158).

12920842 is a wasteful number, since it uses less digits than its factorization.

12920842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6701.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 12920842 is about 3594.5572745472. The cubic root of 12920842 is about 234.6552482212.

The spelling of 12920842 in words is "twelve million, nine hundred twenty thousand, eight hundred forty-two".