2042690 has 32 divisors (see below), whose sum is σ = 4173120. Its totient is φ = 713664.

The previous prime is 2042687. The next prime is 2042717. The reversal of 2042690 is 962402.

It is a super-2 number, since 2×2042690² = 8345164872200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2057 + ... + 2883.

It is an arithmetic number, because the mean of its divisors is an integer number (130410).

2^2042690 is an apocalyptic number.

2042690 is an abundant number, since it is smaller than the sum of its proper divisors (2130430).

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

2042690 is a wasteful number, since it uses less digits than its factorization.

2042690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 2042690 is about 1429.2270638356. The cubic root of 2042690 is about 126.8822352641.

The spelling of 2042690 in words is "two million, forty-two thousand, six hundred ninety".