15242120 has 32 divisors (see below), whose sum is σ = 34715520. Its totient is φ = 6022080.

The previous prime is 15242093. The next prime is 15242137. The reversal of 15242120 is 2124251.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1025 + ... + 5615.

It is an arithmetic number, because the mean of its divisors is an integer number (1084860).

Almost surely, 2^15242120 is an apocalyptic number.

15242120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15242120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17357760).

15242120 is an abundant number, since it is smaller than the sum of its proper divisors (19473400).

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

15242120 is a wasteful number, since it uses less digits than its factorization.

15242120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4685 (or 4681 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 15242120 is about 3904.1157769718. The cubic root of 15242120 is about 247.9410629979.

Adding to 15242120 its reverse (2124251), we get a palindrome (17366371).

The spelling of 15242120 in words is "fifteen million, two hundred forty-two thousand, one hundred twenty".