122717428 has 24 divisors (see below), whose sum is σ = 231577920. Its totient is φ = 56710080.

The previous prime is 122717411. The next prime is 122717429. The reversal of 122717428 is 824717221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 122717393 and 122717402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122717429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16576 + ... + 22807.

It is an arithmetic number, because the mean of its divisors is an integer number (9649080).

Almost surely, 2^122717428 is an apocalyptic number.

It is an amenable number.

122717428 is a deficient number, since it is larger than the sum of its proper divisors (108860492).

122717428 is a wasteful number, since it uses less digits than its factorization.

122717428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39447 (or 39445 counting only the distinct ones).

The product of its digits is 12544, while the sum is 34.

The square root of 122717428 is about 11077.7898517710. The cubic root of 122717428 is about 496.9378554926.

The spelling of 122717428 in words is "one hundred twenty-two million, seven hundred seventeen thousand, four hundred twenty-eight".