122143945 has 16 divisors (see below), whose sum is σ = 182740608. Its totient is φ = 76141440.

The previous prime is 122143921. The next prime is 122143979. The reversal of 122143945 is 549341221.

It is not a de Polignac number, because 122143945 - 2⁹ = 122143433 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158244 + ... + 159013.

It is an arithmetic number, because the mean of its divisors is an integer number (11421288).

Almost surely, 2^122143945 is an apocalyptic number.

It is an amenable number.

122143945 is a deficient number, since it is larger than the sum of its proper divisors (60596663).

122143945 is a wasteful number, since it uses less digits than its factorization.

122143945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317280.

The product of its digits is 8640, while the sum is 31.

The square root of 122143945 is about 11051.8751802579. The cubic root of 122143945 is about 496.1625499683.

The spelling of 122143945 in words is "one hundred twenty-two million, one hundred forty-three thousand, nine hundred forty-five".