122740312 has 16 divisors (see below), whose sum is σ = 235035360. Its totient is φ = 60064224.

The previous prime is 122740307. The next prime is 122740313. The reversal of 122740312 is 213047221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122740313) 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, 162843 + ... + 163594.

It is an arithmetic number, because the mean of its divisors is an integer number (14689710).

Almost surely, 2^122740312 is an apocalyptic number.

It is an amenable number.

122740312 is a deficient number, since it is larger than the sum of its proper divisors (112295048).

122740312 is a wasteful number, since it uses less digits than its factorization.

122740312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326490 (or 326486 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 122740312 is about 11078.8226811336. The cubic root of 122740312 is about 496.9687427628.

Adding to 122740312 its reverse (213047221), we get a palindrome (335787533).

The spelling of 122740312 in words is "one hundred twenty-two million, seven hundred forty thousand, three hundred twelve".