15140023 has 2 divisors, whose sum is σ = 15140024. Its totient is φ = 15140022.

The previous prime is 15140011. The next prime is 15140077. The reversal of 15140023 is 32004151.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15140023 - 2⁹ = 15139511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15139979 and 15140006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15141023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7570011 + 7570012.

It is an arithmetic number, because the mean of its divisors is an integer number (7570012).

Almost surely, 2^15140023 is an apocalyptic number.

15140023 is a deficient number, since it is larger than the sum of its proper divisors (1).

15140023 is an equidigital number, since it uses as much as digits as its factorization.

15140023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 15140023 is about 3891.0182471944. The cubic root of 15140023 is about 247.3862239353.

Adding to 15140023 its reverse (32004151), we get a palindrome (47144174).

The spelling of 15140023 in words is "fifteen million, one hundred forty thousand, twenty-three".