842540157 has 32 divisors (see below), whose sum is σ = 1265846400. Its totient is φ = 553803264.

The previous prime is 842540137. The next prime is 842540159. The reversal of 842540157 is 751045248.

It is not a de Polignac number, because 842540157 - 2¹⁵ = 842507389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842540159) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1018378 + ... + 1019204.

It is an arithmetic number, because the mean of its divisors is an integer number (39557700).

Almost surely, 2^842540157 is an apocalyptic number.

It is an amenable number.

842540157 is a deficient number, since it is larger than the sum of its proper divisors (423306243).

842540157 is a wasteful number, since it uses less digits than its factorization.

842540157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322 (or 1316 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

The square root of 842540157 is about 29026.5422846057. The cubic root of 842540157 is about 944.4889249603.

The spelling of 842540157 in words is "eight hundred forty-two million, five hundred forty thousand, one hundred fifty-seven".