124555250421 has 24 divisors (see below), whose sum is σ = 213230390464. Its totient is φ = 71174427840.

The previous prime is 124555250377. The next prime is 124555250423. The reversal of 124555250421 is 124052555421.

124555250421 is a `hidden beast` number, since 12 + 4 + 5 + 552 + 50 + 42 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-124555250421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124555250423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36610660 + ... + 36614061.

Almost surely, 2^124555250421 is an apocalyptic number.

It is an amenable number.

124555250421 is a deficient number, since it is larger than the sum of its proper divisors (88675140043).

124555250421 is an frugal number, since it uses more digits than its factorization.

124555250421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73224743 (or 73224731 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 36.

The spelling of 124555250421 in words is "one hundred twenty-four billion, five hundred fifty-five million, two hundred fifty thousand, four hundred twenty-one".