124112520545 has 24 divisors (see below), whose sum is σ = 165732470568. Its totient is φ = 88695751680.

The previous prime is 124112520503. The next prime is 124112520547. The reversal of 124112520545 is 545025211421.

It can be written as a sum of positive squares in 4 ways, for example, as 1684609936 + 122427910609 = 41044^2 + 349897^2 .

It is not a de Polignac number, because 124112520545 - 2¹⁰ = 124112519521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (124112520547) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 930992 + ... + 1055921.

It is an arithmetic number, because the mean of its divisors is an integer number (6905519607).

Almost surely, 2^124112520545 is an apocalyptic number.

It is an amenable number.

124112520545 is a deficient number, since it is larger than the sum of its proper divisors (41619950023).

124112520545 is a wasteful number, since it uses less digits than its factorization.

124112520545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1986993 (or 1986962 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 32.

Adding to 124112520545 its reverse (545025211421), we get a palindrome (669137731966).

The spelling of 124112520545 in words is "one hundred twenty-four billion, one hundred twelve million, five hundred twenty thousand, five hundred forty-five".