842145744 has 80 divisors (see below), whose sum is σ = 2377080000. Its totient is φ = 254791680.

The previous prime is 842145743. The next prime is 842145749. The reversal of 842145744 is 447541248.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842145743) 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, 658834 + ... + 660110.

It is an arithmetic number, because the mean of its divisors is an integer number (29713500).

Almost surely, 2^842145744 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 842145744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1188540000).

842145744 is an abundant number, since it is smaller than the sum of its proper divisors (1534934256).

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

842145744 is a wasteful number, since it uses less digits than its factorization.

842145744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2548 (or 2542 counting only the distinct ones).

The product of its digits is 143360, while the sum is 39.

The square root of 842145744 is about 29019.7474833948. The cubic root of 842145744 is about 944.3415227462.

The spelling of 842145744 in words is "eight hundred forty-two million, one hundred forty-five thousand, seven hundred forty-four".