122156943 has 8 divisors (see below), whose sum is σ = 167278128. Its totient is φ = 79236864.

The previous prime is 122156921. The next prime is 122156971. The reversal of 122156943 is 349651221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 122156943 - 2⁵ = 122156911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122151943) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 550146 + ... + 550367.

It is an arithmetic number, because the mean of its divisors is an integer number (20909766).

Almost surely, 2^122156943 is an apocalyptic number.

122156943 is a deficient number, since it is larger than the sum of its proper divisors (45121185).

122156943 is a wasteful number, since it uses less digits than its factorization.

122156943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100553.

The product of its digits is 12960, while the sum is 33.

The square root of 122156943 is about 11052.4632096198. The cubic root of 122156943 is about 496.1801491272.

The spelling of 122156943 in words is "one hundred twenty-two million, one hundred fifty-six thousand, nine hundred forty-three".