15242140243 has 8 divisors (see below), whose sum is σ = 16629154416. Its totient is φ = 13855353600.

The previous prime is 15242140217. The next prime is 15242140253. The reversal of 15242140243 is 34204124251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-15242140243 is a prime.

It is a super-3 number, since 3×15242140243³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15242140213) 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, 102663 + ... + 202543.

It is an arithmetic number, because the mean of its divisors is an integer number (2078644302).

Almost surely, 2^15242140243 is an apocalyptic number.

15242140243 is a deficient number, since it is larger than the sum of its proper divisors (1387014173).

15242140243 is a wasteful number, since it uses less digits than its factorization.

15242140243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113765.

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 15242140243 its reverse (34204124251), we get a palindrome (49446264494).

The spelling of 15242140243 in words is "fifteen billion, two hundred forty-two million, one hundred forty thousand, two hundred forty-three".