15040542 has 24 divisors (see below), whose sum is σ = 33065928. Its totient is φ = 4557520.

The previous prime is 15040541. The next prime is 15040561. The reversal of 15040542 is 24504051.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15040541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9633 + ... + 11084.

It is an arithmetic number, because the mean of its divisors is an integer number (1377747).

Almost surely, 2^15040542 is an apocalyptic number.

15040542 is an abundant number, since it is smaller than the sum of its proper divisors (18025386).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15040542 is a wasteful number, since it uses less digits than its factorization.

15040542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20744 (or 20733 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 15040542 is about 3878.2137640929. The cubic root of 15040542 is about 246.8431968219.

Adding to 15040542 its reverse (24504051), we get a palindrome (39544593).

The spelling of 15040542 in words is "fifteen million, forty thousand, five hundred forty-two".