122890755 has 64 divisors (see below), whose sum is σ = 219300480. Its totient is φ = 58392576.

The previous prime is 122890697. The next prime is 122890799. The reversal of 122890755 is 557098221.

It is not a de Polignac number, because 122890755 - 2¹¹ = 122888707 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1266867 + ... + 1266963.

It is an arithmetic number, because the mean of its divisors is an integer number (3426570).

Almost surely, 2^122890755 is an apocalyptic number.

122890755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

122890755 is a deficient number, since it is larger than the sum of its proper divisors (96409725).

122890755 is a wasteful number, since it uses less digits than its factorization.

122890755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280.

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 122890755 is about 11085.6102673691. The cubic root of 122890755 is about 497.1717049937.

The spelling of 122890755 in words is "one hundred twenty-two million, eight hundred ninety thousand, seven hundred fifty-five".