123397953 has 16 divisors (see below), whose sum is σ = 188737536. Its totient is φ = 70249680.

The previous prime is 123397933. The next prime is 123397957. The reversal of 123397953 is 359793321.

It is not a de Polignac number, because 123397953 - 2¹⁰ = 123396929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123397957) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5151 + ... + 16532.

It is an arithmetic number, because the mean of its divisors is an integer number (11796096).

Almost surely, 2^123397953 is an apocalyptic number.

It is an amenable number.

123397953 is a deficient number, since it is larger than the sum of its proper divisors (65339583).

123397953 is a wasteful number, since it uses less digits than its factorization.

123397953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21964.

The product of its digits is 153090, while the sum is 42.

The square root of 123397953 is about 11108.4631250232. The cubic root of 123397953 is about 497.8547462698.

The spelling of 123397953 in words is "one hundred twenty-three million, three hundred ninety-seven thousand, nine hundred fifty-three".