857142000 has 800 divisors, whose sum is σ = 3735635904. Its totient is φ = 186624000.

The previous prime is 857141981. The next prime is 857142017. The reversal of 857142000 is 241758.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 23165982 + ... + 23166018.

Almost surely, 2^857142000 is an apocalyptic number.

857142000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 857142000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1867817952).

857142000 is an abundant number, since it is smaller than the sum of its proper divisors (2878493904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

857142000 is a wasteful number, since it uses less digits than its factorization.

857142000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96 (or 71 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 857142000 is about 29276.9875499512. The cubic root of 857142000 is about 949.9139349548.

Adding to 857142000 its reverse (241758), we get a palindrome (857383758).

The spelling of 857142000 in words is "eight hundred fifty-seven million, one hundred forty-two thousand".