122451380 has 12 divisors (see below), whose sum is σ = 257147940. Its totient is φ = 48980544.

The previous prime is 122451367. The next prime is 122451383. The reversal of 122451380 is 83154221.

It can be written as a sum of positive squares in 2 ways, for example, as 15038884 + 107412496 = 3878^2 + 10364^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122451383) 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, 3061265 + ... + 3061304.

It is an arithmetic number, because the mean of its divisors is an integer number (21428995).

Almost surely, 2^122451380 is an apocalyptic number.

122451380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122451380 is an abundant number, since it is smaller than the sum of its proper divisors (134696560).

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

122451380 is a wasteful number, since it uses less digits than its factorization.

122451380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6122578 (or 6122576 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 122451380 is about 11065.7751648947. The cubic root of 122451380 is about 496.5784798059.

The spelling of 122451380 in words is "one hundred twenty-two million, four hundred fifty-one thousand, three hundred eighty".