122401279 has 16 divisors (see below), whose sum is σ = 164344320. Its totient is φ = 88040160.

The previous prime is 122401271. The next prime is 122401297. The reversal of 122401279 is 972104221.

It is not a de Polignac number, because 122401279 - 2³ = 122401271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122401271) 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 15 ways as a sum of consecutive naturals, for example, 60139 + ... + 62140.

It is an arithmetic number, because the mean of its divisors is an integer number (10271520).

Almost surely, 2^122401279 is an apocalyptic number.

122401279 is a deficient number, since it is larger than the sum of its proper divisors (41943041).

122401279 is a wasteful number, since it uses less digits than its factorization.

122401279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122310.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 122401279 is about 11063.5111515287. The cubic root of 122401279 is about 496.5107455147.

The spelling of 122401279 in words is "one hundred twenty-two million, four hundred one thousand, two hundred seventy-nine".