124020345330520 has 32 divisors (see below), whose sum is σ = 279057046060800. Its totient is φ = 49606134742528.

The previous prime is 124020345330449. The next prime is 124020345330521. The reversal of 124020345330520 is 25033543020421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124020345330521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61602865 + ... + 63584224.

It is an arithmetic number, because the mean of its divisors is an integer number (8720532689400).

Almost surely, 2^{124020345330520} is an apocalyptic number.

124020345330520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124020345330520 is an abundant number, since it is smaller than the sum of its proper divisors (155036700730280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

124020345330520 is a wasteful number, since it uses less digits than its factorization.

124020345330520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125211867 (or 125211863 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 34.

Adding to 124020345330520 its reverse (25033543020421), we get a palindrome (149053888350941).

The spelling of 124020345330520 in words is "one hundred twenty-four trillion, twenty billion, three hundred forty-five million, three hundred thirty thousand, five hundred twenty".