122739807 has 16 divisors (see below), whose sum is σ = 166447872. Its totient is φ = 80441280.

The previous prime is 122739797. The next prime is 122739821. The reversal of 122739807 is 708937221.

It is not a de Polignac number, because 122739807 - 2¹⁰ = 122738783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122739857) 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, 42582 + ... + 45372.

It is an arithmetic number, because the mean of its divisors is an integer number (10402992).

Almost surely, 2^122739807 is an apocalyptic number.

122739807 is a deficient number, since it is larger than the sum of its proper divisors (43708065).

122739807 is a wasteful number, since it uses less digits than its factorization.

122739807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3038.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 122739807 is about 11078.7998898798. The cubic root of 122739807 is about 496.9680611895.

The spelling of 122739807 in words is "one hundred twenty-two million, seven hundred thirty-nine thousand, eight hundred seven".