122998550 has 24 divisors (see below), whose sum is σ = 230058192. Its totient is φ = 48924000.

The previous prime is 122998529. The next prime is 122998567. The reversal of 122998550 is 55899221.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 122998498 and 122998507.

It is a congruent number.

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, 2255 + ... + 15845.

It is an arithmetic number, because the mean of its divisors is an integer number (9585758).

Almost surely, 2^122998550 is an apocalyptic number.

122998550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122998550 is a deficient number, since it is larger than the sum of its proper divisors (107059642).

122998550 is a wasteful number, since it uses less digits than its factorization.

122998550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13784 (or 13779 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 41.

The square root of 122998550 is about 11090.4711351682. The cubic root of 122998550 is about 497.3170290847.

The spelling of 122998550 in words is "one hundred twenty-two million, nine hundred ninety-eight thousand, five hundred fifty".