15120052420 has 24 divisors (see below), whose sum is σ = 34638666048. Its totient is φ = 5498200800.

The previous prime is 15120052417. The next prime is 15120052429. The reversal of 15120052420 is 2425002151.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 15120052391 and 15120052400.

It is not an unprimeable number, because it can be changed into a prime (15120052429) 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, 34363536 + ... + 34363975.

It is an arithmetic number, because the mean of its divisors is an integer number (1443277752).

Almost surely, 2^15120052420 is an apocalyptic number.

15120052420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15120052420 is an abundant number, since it is smaller than the sum of its proper divisors (19518613628).

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

15120052420 is a wasteful number, since it uses less digits than its factorization.

15120052420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68727531 (or 68727529 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

Adding to 15120052420 its reverse (2425002151), we get a palindrome (17545054571).

The spelling of 15120052420 in words is "fifteen billion, one hundred twenty million, fifty-two thousand, four hundred twenty".