15142666 has 36 divisors (see below), whose sum is σ = 29065554. Its totient is φ = 5895120.

The previous prime is 15142661. The next prime is 15142679. The reversal of 15142666 is 66624151.

15142666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 12006225 + 3136441 = 3465^2 + 1771^2 .

It is not an unprimeable number, because it can be changed into a prime (15142661) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 11220 + ... + 12496.

Almost surely, 2^15142666 is an apocalyptic number.

15142666 is a deficient number, since it is larger than the sum of its proper divisors (13922888).

15142666 is a wasteful number, since it uses less digits than its factorization.

15142666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315 (or 1297 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 15142666 is about 3891.3578606959. The cubic root of 15142666 is about 247.4006185358.

The spelling of 15142666 in words is "fifteen million, one hundred forty-two thousand, six hundred sixty-six".