90002042 has 8 divisors (see below), whose sum is σ = 145387956. Its totient is φ = 41539392.

The previous prime is 90002041. The next prime is 90002089. The reversal of 90002042 is 24020009.

It can be written as a sum of positive squares in 2 ways, for example, as 86471401 + 3530641 = 9299^2 + 1879^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 90002042.

It is not an unprimeable number, because it can be changed into a prime (90002041) 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, 1730783 + ... + 1730834.

Almost surely, 2^90002042 is an apocalyptic number.

90002042 is a deficient number, since it is larger than the sum of its proper divisors (55385914).

90002042 is a wasteful number, since it uses less digits than its factorization.

90002042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3461632.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 90002042 is about 9486.9406027444. The cubic root of 90002042 is about 448.1438638999.

The spelling of 90002042 in words is "ninety million, two thousand, forty-two".