87071042 has 16 divisors (see below), whose sum is σ = 140187672. Its totient is φ = 40412160.

The previous prime is 87071029. The next prime is 87071099. The reversal of 87071042 is 24017078.

It can be written as a sum of positive squares in 4 ways, for example, as 87067561 + 3481 = 9331^2 + 59^2 .

It is a junction number, because it is equal to n+sod(n) for n = 87070996 and 87071014.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15059 + ... + 20022.

Almost surely, 2^87071042 is an apocalyptic number.

87071042 is a deficient number, since it is larger than the sum of its proper divisors (53116630).

87071042 is a wasteful number, since it uses less digits than its factorization.

87071042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35173.

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 87071042 is about 9331.1865269107. The cubic root of 87071042 is about 443.2253387367.

The spelling of 87071042 in words is "eighty-seven million, seventy-one thousand, forty-two".