842251 has 8 divisors (see below), whose sum is σ = 897680. Its totient is φ = 787968.

The previous prime is 842249. The next prime is 842267. The reversal of 842251 is 152248.

842251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 842251 - 2¹ = 842249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (842291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1615 + ... + 2071.

It is an arithmetic number, because the mean of its divisors is an integer number (112210).

2⁸⁴²²⁵¹ is an apocalyptic number.

842251 is a deficient number, since it is larger than the sum of its proper divisors (55429).

842251 is a wasteful number, since it uses less digits than its factorization.

842251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573.

The product of its digits is 640, while the sum is 22.

The square root of 842251 is about 917.7423385679. The cubic root of 842251 is about 94.4380864104.

Adding to 842251 its reverse (152248), we get a palindrome (994499).

The spelling of 842251 in words is "eight hundred forty-two thousand, two hundred fifty-one".