115211942 has 4 divisors (see below), whose sum is σ = 172817916. Its totient is φ = 57605970.

The previous prime is 115211923. The next prime is 115211951. The reversal of 115211942 is 249112511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 249112511 = 1367 ⋅182233.

It is a super-2 number, since 2×115211942² = 26547583158822728, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28802984 + ... + 28802987.

It is an arithmetic number, because the mean of its divisors is an integer number (43204479).

Almost surely, 2^115211942 is an apocalyptic number.

115211942 is a deficient number, since it is larger than the sum of its proper divisors (57605974).

115211942 is an equidigital number, since it uses as much as digits as its factorization.

115211942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57605973.

The product of its digits is 720, while the sum is 26.

The square root of 115211942 is about 10733.6825926613. The cubic root of 115211942 is about 486.5929724113.

The spelling of 115211942 in words is "one hundred fifteen million, two hundred eleven thousand, nine hundred forty-two".