122720352 has 24 divisors (see below), whose sum is σ = 322141176. Its totient is φ = 40906752.

The previous prime is 122720347. The next prime is 122720363. The reversal of 122720352 is 253027221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

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 3 ways as a sum of consecutive naturals, for example, 639073 + ... + 639264.

It is an arithmetic number, because the mean of its divisors is an integer number (13422549).

Almost surely, 2^122720352 is an apocalyptic number.

122720352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

122720352 is an abundant number, since it is smaller than the sum of its proper divisors (199420824).

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

122720352 is a wasteful number, since it uses less digits than its factorization.

122720352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278350 (or 1278342 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 122720352 is about 11077.9218267688. The cubic root of 122720352 is about 496.9418023233.

Adding to 122720352 its reverse (253027221), we get a palindrome (375747573).

The spelling of 122720352 in words is "one hundred twenty-two million, seven hundred twenty thousand, three hundred fifty-two".