124780885421 has 4 divisors (see below), whose sum is σ = 125992350432. Its totient is φ = 123569420412.

The previous prime is 124780885403. The next prime is 124780885429. The reversal of 124780885421 is 124588087421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124780885421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 124780885421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124780885429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 605732351 + ... + 605732556.

It is an arithmetic number, because the mean of its divisors is an integer number (31498087608).

Almost surely, 2^124780885421 is an apocalyptic number.

It is an amenable number.

124780885421 is a deficient number, since it is larger than the sum of its proper divisors (1211465011).

124780885421 is a wasteful number, since it uses less digits than its factorization.

124780885421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211465010.

The product of its (nonzero) digits is 1146880, while the sum is 50.

The spelling of 124780885421 in words is "one hundred twenty-four billion, seven hundred eighty million, eight hundred eighty-five thousand, four hundred twenty-one".