122540012 has 24 divisors (see below), whose sum is σ = 259497504. Its totient is φ = 49427712.

The previous prime is 122540009. The next prime is 122540017. The reversal of 122540012 is 210045221.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (122540017) 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, 128243 + ... + 129194.

It is an arithmetic number, because the mean of its divisors is an integer number (10812396).

Almost surely, 2^122540012 is an apocalyptic number.

It is an amenable number.

122540012 is an abundant number, since it is smaller than the sum of its proper divisors (136957492).

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

122540012 is a wasteful number, since it uses less digits than its factorization.

122540012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257465 (or 257463 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 122540012 is about 11069.7792209240. The cubic root of 122540012 is about 496.6982610314.

Adding to 122540012 its reverse (210045221), we get a palindrome (332585233).

The spelling of 122540012 in words is "one hundred twenty-two million, five hundred forty thousand, twelve".