123506497404 has 18 divisors (see below), whose sum is σ = 312196979640. Its totient is φ = 41168832456.

The previous prime is 123506497397. The next prime is 123506497421. The reversal of 123506497404 is 404794605321.

123506497404 is a `hidden beast` number, since 1 + 235 + 0 + 6 + 4 + 9 + 7 + 404 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 123506497404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1715367984 + ... + 1715368055.

Almost surely, 2^123506497404 is an apocalyptic number.

It is an amenable number.

123506497404 is an abundant number, since it is smaller than the sum of its proper divisors (188690482236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123506497404 is a wasteful number, since it uses less digits than its factorization.

123506497404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3430736049 (or 3430736044 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 123506497404 in words is "one hundred twenty-three billion, five hundred six million, four hundred ninety-seven thousand, four hundred four".