15542423 has 6 divisors (see below), whose sum is σ = 16830144. Its totient is φ = 14346696.

The previous prime is 15542413. The next prime is 15542441. The reversal of 15542423 is 32424551.

It is a happy number.

It is not a de Polignac number, because 15542423 - 2⁸ = 15542167 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15542392 and 15542401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15542413) 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 in 5 ways as a sum of consecutive naturals, for example, 45815 + ... + 46152.

It is an arithmetic number, because the mean of its divisors is an integer number (2805024).

Almost surely, 2^15542423 is an apocalyptic number.

15542423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

15542423 is a deficient number, since it is larger than the sum of its proper divisors (1287721).

15542423 is an equidigital number, since it uses as much as digits as its factorization.

15542423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91993 (or 91980 counting only the distinct ones).

The product of its digits is 4800, while the sum is 26.

The square root of 15542423 is about 3942.3879819216. The cubic root of 15542423 is about 249.5588112011.

Adding to 15542423 its reverse (32424551), we get a palindrome (47966974).

The spelling of 15542423 in words is "fifteen million, five hundred forty-two thousand, four hundred twenty-three".