122887740 has 48 divisors (see below), whose sum is σ = 346816512. Its totient is φ = 32510016.

The previous prime is 122887717. The next prime is 122887759. The reversal of 122887740 is 47788221.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

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, 444 + ... + 15683.

It is an arithmetic number, because the mean of its divisors is an integer number (7225344).

Almost surely, 2^122887740 is an apocalyptic number.

122887740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122887740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173408256).

122887740 is an abundant number, since it is smaller than the sum of its proper divisors (223928772).

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

122887740 is a wasteful number, since it uses less digits than its factorization.

122887740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16266 (or 16264 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 39.

The square root of 122887740 is about 11085.4742794343. The cubic root of 122887740 is about 497.1676390927.

The spelling of 122887740 in words is "one hundred twenty-two million, eight hundred eighty-seven thousand, seven hundred forty".