845242 has 4 divisors (see below), whose sum is σ = 1267866. Its totient is φ = 422620.

The previous prime is 845237. The next prime is 845261. The reversal of 845242 is 242548.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 436921 + 408321 = 661^2 + 639^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211309 + ... + 211312.

2⁸⁴⁵²⁴² is an apocalyptic number.

845242 is a deficient number, since it is larger than the sum of its proper divisors (422624).

845242 is a wasteful number, since it uses less digits than its factorization.

845242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422623.

The product of its digits is 2560, while the sum is 25.

The square root of 845242 is about 919.3704367664. The cubic root of 845242 is about 94.5497437874.

The spelling of 845242 in words is "eight hundred forty-five thousand, two hundred forty-two".