2142897856 has 112 divisors (see below), whose sum is σ = 4898257920. Its totient is φ = 920606720.

The previous prime is 2142897811. The next prime is 2142897859. The reversal of 2142897856 is 6587982412.

It is a super-2 number, since 2×2142897856² = 9184022442498793472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2142897859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1440345 + ... + 1441831.

Almost surely, 2^2142897856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2142897856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2449128960).

2142897856 is an abundant number, since it is smaller than the sum of its proper divisors (2755360064).

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

2142897856 is a wasteful number, since it uses less digits than its factorization.

2142897856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622 (or 1612 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 52.

The square root of 2142897856 is about 46291.4447387420. Note that the first 3 decimals coincide. The cubic root of 2142897856 is about 1289.2401542443.

It can be divided in two parts, 2142 and 897856, that added together give a palindrome (899998).

The spelling of 2142897856 in words is "two billion, one hundred forty-two million, eight hundred ninety-seven thousand, eight hundred fifty-six".