122730720 has 96 divisors (see below), whose sum is σ = 441842688. Its totient is φ = 28051968.

The previous prime is 122730703. The next prime is 122730731. The reversal of 122730720 is 27037221.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14904 + ... + 21623.

It is an arithmetic number, because the mean of its divisors is an integer number (4602528).

Almost surely, 2^122730720 is an apocalyptic number.

122730720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122730720 is an abundant number, since it is smaller than the sum of its proper divisors (319111968).

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

122730720 is a wasteful number, since it uses less digits than its factorization.

122730720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36552 (or 36544 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 122730720 is about 11078.3897746920. The cubic root of 122730720 is about 496.9557965995.

Adding to 122730720 its reverse (27037221), we get a palindrome (149767941).

The spelling of 122730720 in words is "one hundred twenty-two million, seven hundred thirty thousand, seven hundred twenty".