15042423145 has 4 divisors (see below), whose sum is σ = 18050907780. Its totient is φ = 12033938512.

The previous prime is 15042423103. The next prime is 15042423169. The reversal of 15042423145 is 54132424051.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6316434576 + 8725988569 = 79476^2 + 93413^2 .

It is a cyclic number.

It is not a de Polignac number, because 15042423145 - 2⁷ = 15042423017 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1504242310 + ... + 1504242319.

It is an arithmetic number, because the mean of its divisors is an integer number (4512726945).

Almost surely, 2^15042423145 is an apocalyptic number.

It is an amenable number.

15042423145 is a deficient number, since it is larger than the sum of its proper divisors (3008484635).

15042423145 is an equidigital number, since it uses as much as digits as its factorization.

15042423145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3008484634.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 15042423145 its reverse (54132424051), we get a palindrome (69174847196).

The spelling of 15042423145 in words is "fifteen billion, forty-two million, four hundred twenty-three thousand, one hundred forty-five".