8157142 has 16 divisors (see below), whose sum is σ = 14028192. Its totient is φ = 3484800.

The previous prime is 8157133. The next prime is 8157169. The reversal of 8157142 is 2417518.

It is a self number, because there is not a number n which added to its sum of digits gives 8157142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4888 + ... + 6340.

It is an arithmetic number, because the mean of its divisors is an integer number (876762).

Almost surely, 2^8157142 is an apocalyptic number.

8157142 is a deficient number, since it is larger than the sum of its proper divisors (5871050).

8157142 is a wasteful number, since it uses less digits than its factorization.

8157142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1863.

The product of its digits is 2240, while the sum is 28.

The square root of 8157142 is about 2856.0710775469. The cubic root of 8157142 is about 201.3010348561.

The spelling of 8157142 in words is "eight million, one hundred fifty-seven thousand, one hundred forty-two".