842042243 has 16 divisors (see below), whose sum is σ = 995573760. Its totient is φ = 696924000.

The previous prime is 842042239. The next prime is 842042273. The reversal of 842042243 is 342240248.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 842042243 - 2² = 842042239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (842042203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99893 + ... + 107993.

It is an arithmetic number, because the mean of its divisors is an integer number (62223360).

Almost surely, 2^842042243 is an apocalyptic number.

842042243 is a deficient number, since it is larger than the sum of its proper divisors (153531517).

842042243 is a wasteful number, since it uses less digits than its factorization.

842042243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8618.

The product of its (nonzero) digits is 12288, while the sum is 29.

The square root of 842042243 is about 29017.9641429236. The cubic root of 842042243 is about 944.3028341554.

The spelling of 842042243 in words is "eight hundred forty-two million, forty-two thousand, two hundred forty-three".