122691436 has 48 divisors (see below), whose sum is σ = 259759360. Its totient is φ = 49533120.

The previous prime is 122691421. The next prime is 122691461. The reversal of 122691436 is 634196221.

It is a happy 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, 111706 + ... + 112798.

Almost surely, 2^122691436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122691436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129879680).

122691436 is an abundant number, since it is smaller than the sum of its proper divisors (137067924).

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

122691436 is a wasteful number, since it uses less digits than its factorization.

122691436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334 (or 1332 counting only the distinct ones).

The product of its digits is 15552, while the sum is 34.

The square root of 122691436 is about 11076.6166314448. The cubic root of 122691436 is about 496.9027685969.

The spelling of 122691436 in words is "one hundred twenty-two million, six hundred ninety-one thousand, four hundred thirty-six".