15042730 has 16 divisors (see below), whose sum is σ = 27285984. Its totient is φ = 5970640.

The previous prime is 15042701. The next prime is 15042743. The reversal of 15042730 is 3724051.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4432 + ... + 7051.

It is an arithmetic number, because the mean of its divisors is an integer number (1705374).

Almost surely, 2^15042730 is an apocalyptic number.

15042730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15042730 is a deficient number, since it is larger than the sum of its proper divisors (12243254).

15042730 is a wasteful number, since it uses less digits than its factorization.

15042730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11621.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 15042730 is about 3878.4958424626. The cubic root of 15042730 is about 246.8551659545.

Adding to 15042730 its reverse (3724051), we get a palindrome (18766781).

The spelling of 15042730 in words is "fifteen million, forty-two thousand, seven hundred thirty".