253424242840 has 32 divisors (see below), whose sum is σ = 570623628960. Its totient is φ = 101295193600.

The previous prime is 253424242829. The next prime is 253424242859. The reversal of 253424242840 is 48242424352.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 253424242793 and 253424242802.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2273116 + ... + 2381995.

It is an arithmetic number, because the mean of its divisors is an integer number (17831988405).

Almost surely, 2^253424242840 is an apocalyptic number.

253424242840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253424242840 is an abundant number, since it is smaller than the sum of its proper divisors (317199386120).

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

253424242840 is a wasteful number, since it uses less digits than its factorization.

253424242840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4656483 (or 4656479 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 40.

The spelling of 253424242840 in words is "two hundred fifty-three billion, four hundred twenty-four million, two hundred forty-two thousand, eight hundred forty".