122689254 has 16 divisors (see below), whose sum is σ = 247171248. Its totient is φ = 40597632.

The previous prime is 122689253. The next prime is 122689267. The reversal of 122689254 is 452986221.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122689253) 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 7 ways as a sum of consecutive naturals, for example, 73807 + ... + 75450.

It is an arithmetic number, because the mean of its divisors is an integer number (15448203).

Almost surely, 2^122689254 is an apocalyptic number.

122689254 is an abundant number, since it is smaller than the sum of its proper divisors (124481994).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122689254 is a wasteful number, since it uses less digits than its factorization.

122689254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149399.

The product of its digits is 69120, while the sum is 39.

The square root of 122689254 is about 11076.5181352264. The cubic root of 122689254 is about 496.8998228649.

The spelling of 122689254 in words is "one hundred twenty-two million, six hundred eighty-nine thousand, two hundred fifty-four".