122254906 has 4 divisors (see below), whose sum is σ = 183382362. Its totient is φ = 61127452.

The previous prime is 122254897. The next prime is 122254921. The reversal of 122254906 is 609452221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 609452221 = 7 ⋅87064603.

It can be written as a sum of positive squares in only one way, i.e., 99301225 + 22953681 = 9965^2 + 4791^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30563725 + ... + 30563728.

Almost surely, 2^122254906 is an apocalyptic number.

122254906 is a deficient number, since it is larger than the sum of its proper divisors (61127456).

122254906 is an equidigital number, since it uses as much as digits as its factorization.

122254906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61127455.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 122254906 is about 11056.8940485111. The cubic root of 122254906 is about 496.3127498813.

The spelling of 122254906 in words is "one hundred twenty-two million, two hundred fifty-four thousand, nine hundred six".