90144842 has 8 divisors (see below), whose sum is σ = 135258816. Its totient is φ = 45058572.

The previous prime is 90144833. The next prime is 90144883. The reversal of 90144842 is 24844109.

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

It is a junction number, because it is equal to n+sod(n) for n = 90144799 and 90144808.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6143 + ... + 14765.

It is an arithmetic number, because the mean of its divisors is an integer number (16907352).

Almost surely, 2^90144842 is an apocalyptic number.

90144842 is a deficient number, since it is larger than the sum of its proper divisors (45113974).

90144842 is a wasteful number, since it uses less digits than its factorization.

90144842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13852.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 90144842 is about 9494.4637552629. The cubic root of 90144842 is about 448.3807515923.

The spelling of 90144842 in words is "ninety million, one hundred forty-four thousand, eight hundred forty-two".