122169840 has 80 divisors (see below), whose sum is σ = 407869728. Its totient is φ = 30071808.

The previous prime is 122169821. The next prime is 122169857. The reversal of 122169840 is 48961221.

It is a tau number, because it is divible by the number of its divisors (80).

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, 16459 + ... + 22698.

Almost surely, 2^122169840 is an apocalyptic number.

122169840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122169840 is an abundant number, since it is smaller than the sum of its proper divisors (285699888).

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

122169840 is a wasteful number, since it uses less digits than its factorization.

122169840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39186 (or 39180 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 122169840 is about 11053.0466388232. The cubic root of 122169840 is about 496.1976102992.

The spelling of 122169840 in words is "one hundred twenty-two million, one hundred sixty-nine thousand, eight hundred forty".