122500428 has 24 divisors (see below), whose sum is σ = 286040832. Its totient is φ = 40803984.

The previous prime is 122500423. The next prime is 122500439. The reversal of 122500428 is 824005221.

It is a junction number, because it is equal to n+sod(n) for n = 122500398 and 122500407.

It is not an unprimeable number, because it can be changed into a prime (122500423) 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, 19401 + ... + 24927.

It is an arithmetic number, because the mean of its divisors is an integer number (11918368).

Almost surely, 2^122500428 is an apocalyptic number.

It is an amenable number.

122500428 is an abundant number, since it is smaller than the sum of its proper divisors (163540404).

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

122500428 is a wasteful number, since it uses less digits than its factorization.

122500428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7381 (or 7379 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 122500428 is about 11067.9911456416. The cubic root of 122500428 is about 496.6447725936.

Adding to 122500428 its reverse (824005221), we get a palindrome (946505649).

The spelling of 122500428 in words is "one hundred twenty-two million, five hundred thousand, four hundred twenty-eight".