842142834 has 48 divisors (see below), whose sum is σ = 1971372312. Its totient is φ = 258280704.

The previous prime is 842142823. The next prime is 842142841. The reversal of 842142834 is 438241248.

It can be written as a sum of positive squares in 4 ways, for example, as 262537209 + 579605625 = 16203^2 + 24075^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68502 + ... + 79854.

Almost surely, 2^842142834 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 842142834, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (985686156).

842142834 is an abundant number, since it is smaller than the sum of its proper divisors (1129229478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

842142834 is a wasteful number, since it uses less digits than its factorization.

842142834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11691 (or 11688 counting only the distinct ones).

The product of its digits is 49152, while the sum is 36.

The square root of 842142834 is about 29019.6973450793. The cubic root of 842142834 is about 944.3404350339.

The spelling of 842142834 in words is "eight hundred forty-two million, one hundred forty-two thousand, eight hundred thirty-four".