122137740 has 96 divisors (see below), whose sum is σ = 390317760. Its totient is φ = 31684608.

The previous prime is 122137733. The next prime is 122137753. The reversal of 122137740 is 47731221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16924 + ... + 23036.

It is an arithmetic number, because the mean of its divisors is an integer number (4065810).

Almost surely, 2^122137740 is an apocalyptic number.

122137740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122137740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195158880).

122137740 is an abundant number, since it is smaller than the sum of its proper divisors (268180020).

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

122137740 is a wasteful number, since it uses less digits than its factorization.

122137740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6168 (or 6160 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 122137740 is about 11051.5944551001. The cubic root of 122137740 is about 496.1541480216.

Adding to 122137740 its reverse (47731221), we get a palindrome (169868961).

The spelling of 122137740 in words is "one hundred twenty-two million, one hundred thirty-seven thousand, seven hundred forty".