2661942 has 16 divisors (see below), whose sum is σ = 5340672. Its totient is φ = 884520.

The previous prime is 2661937. The next prime is 2661943. The reversal of 2661942 is 2491662.

2661942 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2661942² = 14171870422728, which contains 22 as substring.

It is an Ulam number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661943) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2467 + ... + 3377.

It is an arithmetic number, because the mean of its divisors is an integer number (333792).

2^2661942 is an apocalyptic number.

2661942 is an abundant number, since it is smaller than the sum of its proper divisors (2678730).

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

2661942 is a wasteful number, since it uses less digits than its factorization.

2661942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1403.

The product of its digits is 5184, while the sum is 30.

The square root of 2661942 is about 1631.5458927042. The cubic root of 2661942 is about 138.5903089326.

The spelling of 2661942 in words is "two million, six hundred sixty-one thousand, nine hundred forty-two".