11942139 has 16 divisors (see below), whose sum is σ = 17547264. Its totient is φ = 7164000.

The previous prime is 11942101. The next prime is 11942141. The reversal of 11942139 is 93124911.

It is not a de Polignac number, because 11942139 - 2⁷ = 11942011 is a prime.

It is a super-2 number, since 2×11942139² = 285229367790642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11942039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1542 + ... + 5124.

It is an arithmetic number, because the mean of its divisors is an integer number (1096704).

Almost surely, 2^11942139 is an apocalyptic number.

11942139 is a deficient number, since it is larger than the sum of its proper divisors (5605125).

11942139 is a wasteful number, since it uses less digits than its factorization.

11942139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3698.

The product of its digits is 1944, while the sum is 30.

The square root of 11942139 is about 3455.7400075816. The cubic root of 11942139 is about 228.5742871108.

It can be divided in two parts, 1194 and 2139, that added together give a palindrome (3333).

The spelling of 11942139 in words is "eleven million, nine hundred forty-two thousand, one hundred thirty-nine".