1587157142 has 8 divisors (see below), whose sum is σ = 2381610000. Its totient is φ = 793287144.

The previous prime is 1587157139. The next prime is 1587157199. The reversal of 1587157142 is 2417517851.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1587157142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138842 + ... + 149837.

It is an arithmetic number, because the mean of its divisors is an integer number (297701250).

Almost surely, 2^1587157142 is an apocalyptic number.

1587157142 is a deficient number, since it is larger than the sum of its proper divisors (794452858).

1587157142 is a wasteful number, since it uses less digits than its factorization.

1587157142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291430.

The product of its digits is 78400, while the sum is 41.

The square root of 1587157142 is about 39839.1408290892. The cubic root of 1587157142 is about 1166.4692893669.

The spelling of 1587157142 in words is "one billion, five hundred eighty-seven million, one hundred fifty-seven thousand, one hundred forty-two".