87182042 has 4 divisors (see below), whose sum is σ = 130773066. Its totient is φ = 43591020.

The previous prime is 87182041. The next prime is 87182057. The reversal of 87182042 is 24028178.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 64818601 + 22363441 = 8051^2 + 4729^2 .

It is not an unprimeable number, because it can be changed into a prime (87182041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21795509 + ... + 21795512.

Almost surely, 2^87182042 is an apocalyptic number.

87182042 is a deficient number, since it is larger than the sum of its proper divisors (43591024).

87182042 is a wasteful number, since it uses less digits than its factorization.

87182042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43591023.

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 87182042 is about 9337.1324291776. The cubic root of 87182042 is about 443.4136030935.

The spelling of 87182042 in words is "eighty-seven million, one hundred eighty-two thousand, forty-two".