122531506 has 8 divisors (see below), whose sum is σ = 183859884. Its totient is φ = 61244880.

The previous prime is 122531473. The next prime is 122531509. The reversal of 122531506 is 605135221.

It can be written as a sum of positive squares in 2 ways, for example, as 103530625 + 19000881 = 10175^2 + 4359^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (122531509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1605 + ... + 15736.

Almost surely, 2^122531506 is an apocalyptic number.

122531506 is a deficient number, since it is larger than the sum of its proper divisors (61328378).

122531506 is a wasteful number, since it uses less digits than its factorization.

122531506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20876.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 122531506 is about 11069.3950150855. The cubic root of 122531506 is about 496.6867681508.

Adding to 122531506 its reverse (605135221), we get a palindrome (727666727).

The spelling of 122531506 in words is "one hundred twenty-two million, five hundred thirty-one thousand, five hundred six".