842385253 has 8 divisors (see below), whose sum is σ = 866301048. Its totient is φ = 818529984.

The previous prime is 842385223. The next prime is 842385283. The reversal of 842385253 is 352583248.

It is an interprime number because it is at equal distance from previous prime (842385223) and next prime (842385283).

It can be written as a sum of positive squares in 4 ways, for example, as 97259044 + 745126209 = 9862^2 + 27297^2 .

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

It is not a de Polignac number, because 842385253 - 2¹³ = 842377061 is a prime.

It is a super-2 number, since 2×842385253² = 1419225828943748018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842385223) 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, 13875 + ... + 43327.

It is an arithmetic number, because the mean of its divisors is an integer number (108287631).

Almost surely, 2^842385253 is an apocalyptic number.

It is an amenable number.

842385253 is a deficient number, since it is larger than the sum of its proper divisors (23915795).

842385253 is a wasteful number, since it uses less digits than its factorization.

842385253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30263.

The product of its digits is 230400, while the sum is 40.

The square root of 842385253 is about 29023.8738455086. The cubic root of 842385253 is about 944.4310388650.

The spelling of 842385253 in words is "eight hundred forty-two million, three hundred eighty-five thousand, two hundred fifty-three".