122739017 has 4 divisors (see below), whose sum is σ = 128075520. Its totient is φ = 117402516.

The previous prime is 122738999. The next prime is 122739037. The reversal of 122739017 is 710937221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 122739017 - 2²⁰ = 121690441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122739037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2668217 + ... + 2668262.

It is an arithmetic number, because the mean of its divisors is an integer number (32018880).

Almost surely, 2^122739017 is an apocalyptic number.

It is an amenable number.

122739017 is a deficient number, since it is larger than the sum of its proper divisors (5336503).

122739017 is an equidigital number, since it uses as much as digits as its factorization.

122739017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5336502.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 122739017 is about 11078.7642361411. The cubic root of 122739017 is about 496.9669949622.

The spelling of 122739017 in words is "one hundred twenty-two million, seven hundred thirty-nine thousand, seventeen".