15142223 has 8 divisors (see below), whose sum is σ = 16193520. Its totient is φ = 14108800.

The previous prime is 15142219. The next prime is 15142249. The reversal of 15142223 is 32224151.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15142223 - 2² = 15142219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15142195 and 15142204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15142273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2693 + ... + 6126.

It is an arithmetic number, because the mean of its divisors is an integer number (2024190).

Almost surely, 2^15142223 is an apocalyptic number.

15142223 is a deficient number, since it is larger than the sum of its proper divisors (1051297).

15142223 is a wasteful number, since it uses less digits than its factorization.

15142223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8937.

The product of its digits is 480, while the sum is 20.

The square root of 15142223 is about 3891.3009392747. The cubic root of 15142223 is about 247.3982059368.

Adding to 15142223 its reverse (32224151), we get a palindrome (47366374).

The spelling of 15142223 in words is "fifteen million, one hundred forty-two thousand, two hundred twenty-three".