57071142 has 120 divisors (see below), whose sum is σ = 144427536. Its totient is φ = 16803072.

The previous prime is 57071123. The next prime is 57071153. The reversal of 57071142 is 24117075.

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 59 ways as a sum of consecutive naturals, for example, 1076788 + ... + 1076840.

Almost surely, 2^57071142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57071142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72213768).

57071142 is an abundant number, since it is smaller than the sum of its proper divisors (87356394).

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

57071142 is a wasteful number, since it uses less digits than its factorization.

57071142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 57071142 is about 7554.5444601246. The cubic root of 57071142 is about 385.0101577125.

The spelling of 57071142 in words is "fifty-seven million, seventy-one thousand, one hundred forty-two".