15200242123 has 4 divisors (see below), whose sum is σ = 16582082328. Its totient is φ = 13818401920.

The previous prime is 15200242081. The next prime is 15200242163. The reversal of 15200242123 is 32124200251.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 15200242123 - 2⁹ = 15200241611 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15200242094 and 15200242103.

It is not an unprimeable number, because it can be changed into a prime (15200242163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 690920086 + ... + 690920107.

It is an arithmetic number, because the mean of its divisors is an integer number (4145520582).

Almost surely, 2^15200242123 is an apocalyptic number.

15200242123 is a deficient number, since it is larger than the sum of its proper divisors (1381840205).

15200242123 is a wasteful number, since it uses less digits than its factorization.

15200242123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1381840204.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 15200242123 its reverse (32124200251), we get a palindrome (47324442374).

The spelling of 15200242123 in words is "fifteen billion, two hundred million, two hundred forty-two thousand, one hundred twenty-three".