842524240 has 40 divisors (see below), whose sum is σ = 2026421640. Its totient is φ = 325387776.

The previous prime is 842524237. The next prime is 842524261. The reversal of 842524240 is 42425248.

842524240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 281971264 + 560552976 = 16792^2 + 23676^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179259 + ... + 183898.

It is an arithmetic number, because the mean of its divisors is an integer number (50660541).

Almost surely, 2^842524240 is an apocalyptic number.

842524240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

842524240 is an abundant number, since it is smaller than the sum of its proper divisors (1183897400).

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

842524240 is a wasteful number, since it uses less digits than its factorization.

842524240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363199 (or 363193 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 31.

The square root of 842524240 is about 29026.2681032199. The cubic root of 842524240 is about 944.4829772616.

Adding to 842524240 its reverse (42425248), we get a palindrome (884949488).

The spelling of 842524240 in words is "eight hundred forty-two million, five hundred twenty-four thousand, two hundred forty".