15042542323 has 4 divisors (see below), whose sum is σ = 15152342040. Its totient is φ = 14932742608.

The previous prime is 15042542311. The next prime is 15042542341. The reversal of 15042542323 is 32324524051.

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 15042542323 - 2²¹ = 15040445171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15042549323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54899653 + ... + 54899926.

It is an arithmetic number, because the mean of its divisors is an integer number (3788085510).

Almost surely, 2^15042542323 is an apocalyptic number.

15042542323 is a deficient number, since it is larger than the sum of its proper divisors (109799717).

15042542323 is a wasteful number, since it uses less digits than its factorization.

15042542323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109799716.

The product of its (nonzero) digits is 28800, while the sum is 31.

The spelling of 15042542323 in words is "fifteen billion, forty-two million, five hundred forty-two thousand, three hundred twenty-three".