842449748 has 18 divisors (see below), whose sum is σ = 1714987386. Its totient is φ = 361049808.

The previous prime is 842449747. The next prime is 842449757. The reversal of 842449748 is 847944248.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 542051524 + 300398224 = 23282^2 + 17332^2 .

It is a junction number, because it is equal to n+sod(n) for n = 842449696 and 842449705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842449747) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2148911 + ... + 2149302.

It is an arithmetic number, because the mean of its divisors is an integer number (95277077).

Almost surely, 2^842449748 is an apocalyptic number.

It is an amenable number.

842449748 is an abundant number, since it is smaller than the sum of its proper divisors (872537638).

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

842449748 is a wasteful number, since it uses less digits than its factorization.

842449748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4298231 (or 4298222 counting only the distinct ones).

The product of its digits is 2064384, while the sum is 50.

The square root of 842449748 is about 29024.9848923303. The cubic root of 842449748 is about 944.4551408718.

The spelling of 842449748 in words is "eight hundred forty-two million, four hundred forty-nine thousand, seven hundred forty-eight".