90515842 has 16 divisors (see below), whose sum is σ = 137047032. Its totient is φ = 44835840.

The previous prime is 90515819. The next prime is 90515869. The reversal of 90515842 is 24851509.

It can be written as a sum of positive squares in 4 ways, for example, as 16573041 + 73942801 = 4071^2 + 8599^2 .

It is a junction number, because it is equal to n+sod(n) for n = 90515798 and 90515807.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162228 + ... + 162784.

Almost surely, 2^90515842 is an apocalyptic number.

90515842 is a deficient number, since it is larger than the sum of its proper divisors (46531190).

90515842 is a wasteful number, since it uses less digits than its factorization.

90515842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1173.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 90515842 is about 9513.9813958195. The cubic root of 90515842 is about 448.9950280781.

The spelling of 90515842 in words is "ninety million, five hundred fifteen thousand, eight hundred forty-two".