122903906 has 8 divisors (see below), whose sum is σ = 185386320. Its totient is φ = 61108468.

The previous prime is 122903861. The next prime is 122903909. The reversal of 122903906 is 609309221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×122903906² = 30210740220113672, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (122903909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171296 + ... + 172011.

It is an arithmetic number, because the mean of its divisors is an integer number (23173290).

Almost surely, 2^122903906 is an apocalyptic number.

122903906 is a deficient number, since it is larger than the sum of its proper divisors (62482414).

122903906 is a wasteful number, since it uses less digits than its factorization.

122903906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343488.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 122903906 is about 11086.2034078399. The cubic root of 122903906 is about 497.1894390966.

The spelling of 122903906 in words is "one hundred twenty-two million, nine hundred three thousand, nine hundred six".