8142135157 has 8 divisors (see below), whose sum is σ = 8773160984. Its totient is φ = 7511781888.

The previous prime is 8142135139. The next prime is 8142135163. The reversal of 8142135157 is 7515312418.

It can be written as a sum of positive squares in 4 ways, for example, as 19439281 + 8122695876 = 4409^2 + 90126^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-8142135157 is a prime.

It is a super-3 number, since 3×8142135157³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8142135187) 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, 142848 + ... + 191545.

It is an arithmetic number, because the mean of its divisors is an integer number (1096645123).

Almost surely, 2^8142135157 is an apocalyptic number.

It is an amenable number.

8142135157 is a deficient number, since it is larger than the sum of its proper divisors (631025827).

8142135157 is a wasteful number, since it uses less digits than its factorization.

8142135157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336279.

The product of its digits is 33600, while the sum is 37.

The square root of 8142135157 is about 90233.7805757910. The cubic root of 8142135157 is about 2011.7751334769.

The spelling of 8142135157 in words is "eight billion, one hundred forty-two million, one hundred thirty-five thousand, one hundred fifty-seven".