900842 has 4 divisors (see below), whose sum is σ = 1351266. Its totient is φ = 450420.

The previous prime is 900821. The next prime is 900863. The reversal of 900842 is 248009.

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

It is an interprime number because it is at equal distance from previous prime (900821) and next prime (900863).

It can be written as a sum of positive squares in only one way, i.e., 502681 + 398161 = 709^2 + 631^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225209 + ... + 225212.

2⁹⁰⁰⁸⁴² is an apocalyptic number.

900842 is a deficient number, since it is larger than the sum of its proper divisors (450424).

900842 is a wasteful number, since it uses less digits than its factorization.

900842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450423.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 900842 is about 949.1269672704. The cubic root of 900842 is about 96.5790380412.

The spelling of 900842 in words is "nine hundred thousand, eight hundred forty-two".