857230143 has 32 divisors (see below), whose sum is σ = 1431060480. Its totient is φ = 443422560.

The previous prime is 857230141. The next prime is 857230193. The reversal of 857230143 is 341032758.

It is not a de Polignac number, because 857230143 - 2¹ = 857230141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857230141) 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, 47446 + ... + 62972.

It is an arithmetic number, because the mean of its divisors is an integer number (44720640).

Almost surely, 2^857230143 is an apocalyptic number.

857230143 is a deficient number, since it is larger than the sum of its proper divisors (573830337).

857230143 is a wasteful number, since it uses less digits than its factorization.

857230143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15787.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 857230143 is about 29278.4928403086. The cubic root of 857230143 is about 949.9464948629.

The spelling of 857230143 in words is "eight hundred fifty-seven million, two hundred thirty thousand, one hundred forty-three".