122986440 has 48 divisors (see below), whose sum is σ = 399707100. Its totient is φ = 32796288.

The previous prime is 122986433. The next prime is 122986459. The reversal of 122986440 is 44689221.

122986440 is a `hidden beast` number, since 1 + 2 + 2 + 9 + 8 + 644 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 106874244 + 16112196 = 10338^2 + 4014^2 .

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 = 122986395 and 122986404.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 170455 + ... + 171174.

Almost surely, 2^122986440 is an apocalyptic number.

122986440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122986440 is an abundant number, since it is smaller than the sum of its proper divisors (276720660).

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

122986440 is a wasteful number, since it uses less digits than its factorization.

122986440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341646 (or 341639 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 122986440 is about 11089.9251575473. The cubic root of 122986440 is about 497.3007071934.

The spelling of 122986440 in words is "one hundred twenty-two million, nine hundred eighty-six thousand, four hundred forty".