122942149 has 16 divisors (see below), whose sum is σ = 138801600. Its totient is φ = 107920000.

The previous prime is 122942143. The next prime is 122942159. The reversal of 122942149 is 941249221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 122942149 - 2⁷ = 122942021 is a prime.

It is a super-2 number, since 2×122942149² = 30229544001476402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122942143) 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, 44202 + ... + 46900.

It is an arithmetic number, because the mean of its divisors is an integer number (8675100).

Almost surely, 2^122942149 is an apocalyptic number.

It is an amenable number.

122942149 is a deficient number, since it is larger than the sum of its proper divisors (15859451).

122942149 is a wasteful number, since it uses less digits than its factorization.

122942149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2852.

The product of its digits is 10368, while the sum is 34.

The square root of 122942149 is about 11087.9280751635. The cubic root of 122942149 is about 497.2410025349.

The spelling of 122942149 in words is "one hundred twenty-two million, nine hundred forty-two thousand, one hundred forty-nine".