122900290 has 16 divisors (see below), whose sum is σ = 224337600. Its totient is φ = 48467440.

The previous prime is 122900257. The next prime is 122900291. The reversal of 122900290 is 92009221.

It is not an unprimeable number, because it can be changed into a prime (122900291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85840 + ... + 87259.

It is an arithmetic number, because the mean of its divisors is an integer number (14021100).

Almost surely, 2^122900290 is an apocalyptic number.

122900290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122900290 is a deficient number, since it is larger than the sum of its proper divisors (101437310).

122900290 is a wasteful number, since it uses less digits than its factorization.

122900290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173177.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 122900290 is about 11086.0403210524. The cubic root of 122900290 is about 497.1845630524.

The spelling of 122900290 in words is "one hundred twenty-two million, nine hundred thousand, two hundred ninety".