15194142 has 40 divisors (see below), whose sum is σ = 34551792. Its totient is φ = 4989600.

The previous prime is 15194131. The next prime is 15194143. The reversal of 15194142 is 24149151.

15194142 is a `hidden beast` number, since 1 + 519 + 4 + 142 = 666.

It is a super-2 number, since 2×15194142² = 461723902232328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15194143) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10842 + ... + 12162.

Almost surely, 2^15194142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15194142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17275896).

15194142 is an abundant number, since it is smaller than the sum of its proper divisors (19357650).

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

15194142 is a wasteful number, since it uses less digits than its factorization.

15194142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1406 (or 1397 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 15194142 is about 3897.9663928772. The cubic root of 15194142 is about 247.6806394769.

The spelling of 15194142 in words is "fifteen million, one hundred ninety-four thousand, one hundred forty-two".