123978097 has 16 divisors (see below), whose sum is σ = 133273600. Its totient is φ = 114987600.

The previous prime is 123978091. The next prime is 123978109. The reversal of 123978097 is 790879321.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 123978097 - 2³ = 123978089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123978091) 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, 226378 + ... + 226924.

It is an arithmetic number, because the mean of its divisors is an integer number (8329600).

Almost surely, 2^123978097 is an apocalyptic number.

It is an amenable number.

123978097 is a deficient number, since it is larger than the sum of its proper divisors (9295503).

123978097 is a wasteful number, since it uses less digits than its factorization.

123978097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796.

The product of its (nonzero) digits is 190512, while the sum is 46.

The square root of 123978097 is about 11134.5452084941. The cubic root of 123978097 is about 498.6337326945.

The spelling of 123978097 in words is "one hundred twenty-three million, nine hundred seventy-eight thousand, ninety-seven".