87030242 has 16 divisors (see below), whose sum is σ = 148857912. Its totient is φ = 37804800.

The previous prime is 87030221. The next prime is 87030283. The reversal of 87030242 is 24203078.

It is a Cunningham number, because it is equal to 9329²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 67749361 + 19280881 = 8231^2 + 4391^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98009 + ... + 98892.

Almost surely, 2^87030242 is an apocalyptic number.

87030242 is a deficient number, since it is larger than the sum of its proper divisors (61827670).

87030242 is a wasteful number, since it uses less digits than its factorization.

87030242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196933.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 87030242 is about 9329.0000535963. Note that the first 4 decimals coincide. The cubic root of 87030242 is about 443.1560986514.

The spelling of 87030242 in words is "eighty-seven million, thirty thousand, two hundred forty-two".