124732117381 has 4 divisors (see below), whose sum is σ = 127085553612. Its totient is φ = 122378681152.

The previous prime is 124732117379. The next prime is 124732117399. The reversal of 124732117381 is 183711237421.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 111683624481 + 13048492900 = 334191^2 + 114230^2 .

It is a cyclic number.

It is not a de Polignac number, because 124732117381 - 2¹ = 124732117379 is a prime.

It is a super-2 number, since 2×124732117381² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124732115381) 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, 1176718036 + ... + 1176718141.

It is an arithmetic number, because the mean of its divisors is an integer number (31771388403).

Almost surely, 2^124732117381 is an apocalyptic number.

It is an amenable number.

124732117381 is a deficient number, since it is larger than the sum of its proper divisors (2353436231).

124732117381 is an equidigital number, since it uses as much as digits as its factorization.

124732117381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2353436230.

The product of its digits is 56448, while the sum is 40.

The spelling of 124732117381 in words is "one hundred twenty-four billion, seven hundred thirty-two million, one hundred seventeen thousand, three hundred eighty-one".