15142493 has 8 divisors (see below), whose sum is σ = 15600288. Its totient is φ = 14689584.

The previous prime is 15142447. The next prime is 15142499. The reversal of 15142493 is 39424151.

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 15142493 - 2⁶ = 15142429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15142499) 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, 5630 + ... + 7872.

It is an arithmetic number, because the mean of its divisors is an integer number (1950036).

Almost surely, 2^15142493 is an apocalyptic number.

It is an amenable number.

15142493 is a deficient number, since it is larger than the sum of its proper divisors (457795).

15142493 is a wasteful number, since it uses less digits than its factorization.

15142493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2443.

The product of its digits is 4320, while the sum is 29.

The square root of 15142493 is about 3891.3356318878. The cubic root of 15142493 is about 247.3996763752.

The spelling of 15142493 in words is "fifteen million, one hundred forty-two thousand, four hundred ninety-three".