124204400531 has 4 divisors (see below), whose sum is σ = 125303554632. Its totient is φ = 123105246432.

The previous prime is 124204400501. The next prime is 124204400557. The reversal of 124204400531 is 135004402421.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124204400531 is a prime.

It is a super-2 number, since 2×124204400531² (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 124204400531.

It is not an unprimeable number, because it can be changed into a prime (124204400501) 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, 549576881 + ... + 549577106.

It is an arithmetic number, because the mean of its divisors is an integer number (31325888658).

Almost surely, 2^124204400531 is an apocalyptic number.

124204400531 is a deficient number, since it is larger than the sum of its proper divisors (1099154101).

124204400531 is a wasteful number, since it uses less digits than its factorization.

124204400531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099154100.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 124204400531 its reverse (135004402421), we get a palindrome (259208802952).

The spelling of 124204400531 in words is "one hundred twenty-four billion, two hundred four million, four hundred thousand, five hundred thirty-one".