122997240 has 48 divisors (see below), whose sum is σ = 399742200. Its totient is φ = 32799168.

The previous prime is 122997221. The next prime is 122997247. The reversal of 122997240 is 42799221.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 122997195 and 122997204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122997247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 170470 + ... + 171189.

Almost surely, 2^122997240 is an apocalyptic number.

122997240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122997240 is an abundant number, since it is smaller than the sum of its proper divisors (276744960).

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

122997240 is a wasteful number, since it uses less digits than its factorization.

122997240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341676 (or 341669 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 122997240 is about 11090.4120753018. The cubic root of 122997240 is about 497.3152635148.

The spelling of 122997240 in words is "one hundred twenty-two million, nine hundred ninety-seven thousand, two hundred forty".