87897142 has 8 divisors (see below), whose sum is σ = 131916096. Its totient is φ = 43925112.

The previous prime is 87897137. The next prime is 87897143. The reversal of 87897142 is 24179878.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 87897092 and 87897101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87897143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6598 + ... + 14809.

It is an arithmetic number, because the mean of its divisors is an integer number (16489512).

Almost surely, 2^87897142 is an apocalyptic number.

87897142 is a deficient number, since it is larger than the sum of its proper divisors (44018954).

87897142 is a wasteful number, since it uses less digits than its factorization.

87897142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23462.

The product of its digits is 225792, while the sum is 46.

The square root of 87897142 is about 9375.3475668905. The cubic root of 87897142 is about 444.6226519564.

It can be divided in two parts, 8789 and 7142, that added together give a triangular number (15931 = T₁₇₈).

The spelling of 87897142 in words is "eighty-seven million, eight hundred ninety-seven thousand, one hundred forty-two".