123275890 has 16 divisors (see below), whose sum is σ = 222066432. Its totient is φ = 49272624.

The previous prime is 123275879. The next prime is 123275909. The reversal of 123275890 is 98572321.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11737 + ... + 19603.

It is an arithmetic number, because the mean of its divisors is an integer number (13879152).

Almost surely, 2^123275890 is an apocalyptic number.

123275890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123275890 is a deficient number, since it is larger than the sum of its proper divisors (98790542).

123275890 is a wasteful number, since it uses less digits than its factorization.

123275890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9441.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 123275890 is about 11102.9676213164. The cubic root of 123275890 is about 497.6905358410.

The spelling of 123275890 in words is "one hundred twenty-three million, two hundred seventy-five thousand, eight hundred ninety".