2990642 has 4 divisors (see below), whose sum is σ = 4485966. Its totient is φ = 1495320.

The previous prime is 2990639. The next prime is 2990677. The reversal of 2990642 is 2460992.

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

It can be written as a sum of positive squares in only one way, i.e., 2719201 + 271441 = 1649^2 + 521^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2990599 and 2990608.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 747659 + ... + 747662.

2^2990642 is an apocalyptic number.

2990642 is a deficient number, since it is larger than the sum of its proper divisors (1495324).

2990642 is a wasteful number, since it uses less digits than its factorization.

2990642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1495323.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 2990642 is about 1729.3472757084. The cubic root of 2990642 is about 144.0748389276.

The spelling of 2990642 in words is "two million, nine hundred ninety thousand, six hundred forty-two".