124828407421 has 4 divisors (see below), whose sum is σ = 126944143200. Its totient is φ = 122712671644.

The previous prime is 124828407391. The next prime is 124828407427. The reversal of 124828407421 is 124704828421.

It is a happy number.

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-124828407421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124828407427) 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, 1057867801 + ... + 1057867918.

It is an arithmetic number, because the mean of its divisors is an integer number (31736035800).

Almost surely, 2^124828407421 is an apocalyptic number.

It is an amenable number.

124828407421 is a deficient number, since it is larger than the sum of its proper divisors (2115735779).

124828407421 is an equidigital number, since it uses as much as digits as its factorization.

124828407421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2115735778.

The product of its (nonzero) digits is 229376, while the sum is 43.

The spelling of 124828407421 in words is "one hundred twenty-four billion, eight hundred twenty-eight million, four hundred seven thousand, four hundred twenty-one".