15242340240 has 160 divisors (see below), whose sum is σ = 53150169600. Its totient is φ = 4064577408.

The previous prime is 15242340221. The next prime is 15242340283. The reversal of 15242340240 is 4204324251.

15242340240 is a `hidden beast` number, since 15 + 242 + 3 + 402 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131401 + ... + 218519.

It is an arithmetic number, because the mean of its divisors is an integer number (332188560).

Almost surely, 2^15242340240 is an apocalyptic number.

15242340240 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 15242340240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26575084800).

15242340240 is an abundant number, since it is smaller than the sum of its proper divisors (37907829360).

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

15242340240 is an frugal number, since it uses more digits than its factorization.

15242340240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87153 (or 87129 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 15242340240 its reverse (4204324251), we get a palindrome (19446664491).

The spelling of 15242340240 in words is "fifteen billion, two hundred forty-two million, three hundred forty thousand, two hundred forty".