513020124 has 18 divisors (see below), whose sum is σ = 1296800960. Its totient is φ = 171006696.

The previous prime is 513020117. The next prime is 513020149. The reversal of 513020124 is 421020315.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 513020097 and 513020106.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7125244 + ... + 7125315.

Almost surely, 2^513020124 is an apocalyptic number.

It is an amenable number.

513020124 is an abundant number, since it is smaller than the sum of its proper divisors (783780836).

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

513020124 is a wasteful number, since it uses less digits than its factorization.

513020124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14250569 (or 14250564 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 513020124 is about 22649.9475496081. The cubic root of 513020124 is about 800.5309621044.

Adding to 513020124 its reverse (421020315), we get a palindrome (934040439).

It can be divided in two parts, 5130201 and 24, that added together give a square (5130225 = 2265²).

The spelling of 513020124 in words is "five hundred thirteen million, twenty thousand, one hundred twenty-four".