124377577421 has 4 divisors (see below), whose sum is σ = 124438939872. Its totient is φ = 124316214972.

The previous prime is 124377577399. The next prime is 124377577459. The reversal of 124377577421 is 124775773421.

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 not a de Polignac number, because 124377577421 - 2¹⁰ = 124377576397 is a prime.

It is a super-2 number, since 2×124377577421² (a number of 23 digits) contains 22 as substring.

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 124377577421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124377577481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30678185 + ... + 30682238.

It is an arithmetic number, because the mean of its divisors is an integer number (31109734968).

Almost surely, 2^124377577421 is an apocalyptic number.

It is an amenable number.

124377577421 is a deficient number, since it is larger than the sum of its proper divisors (61362451).

124377577421 is an equidigital number, since it uses as much as digits as its factorization.

124377577421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61362450.

The product of its digits is 2304960, while the sum is 50.

The spelling of 124377577421 in words is "one hundred twenty-four billion, three hundred seventy-seven million, five hundred seventy-seven thousand, four hundred twenty-one".