15042231 has 6 divisors (see below), whose sum is σ = 21727680. Its totient is φ = 10028148.

The previous prime is 15042197. The next prime is 15042257. The reversal of 15042231 is 13224051.

It is not a de Polignac number, because 15042231 - 2¹⁴ = 15025847 is a prime.

It is a super-2 number, since 2×15042231² = 452537426914722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15042931) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 835671 + ... + 835688.

It is an arithmetic number, because the mean of its divisors is an integer number (3621280).

Almost surely, 2^15042231 is an apocalyptic number.

15042231 is a deficient number, since it is larger than the sum of its proper divisors (6685449).

15042231 is a wasteful number, since it uses less digits than its factorization.

15042231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1671365 (or 1671362 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 15042231 is about 3878.4315128670. The cubic root of 15042231 is about 246.8524363505.

Adding to 15042231 its reverse (13224051), we get a palindrome (28266282).

The spelling of 15042231 in words is "fifteen million, forty-two thousand, two hundred thirty-one".