252122003440 has 40 divisors (see below), whose sum is σ = 586378384560. Its totient is φ = 100815300096.

The previous prime is 252122003429. The next prime is 252122003473. The reversal of 252122003440 is 44300221252.

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, 280429 + ... + 763468.

It is an arithmetic number, because the mean of its divisors is an integer number (14659459614).

Almost surely, 2^252122003440 is an apocalyptic number.

252122003440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252122003440 is an abundant number, since it is smaller than the sum of its proper divisors (334256381120).

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

252122003440 is a wasteful number, since it uses less digits than its factorization.

252122003440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046929 (or 1046923 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 252122003440 its reverse (44300221252), we get a palindrome (296422224692).

The spelling of 252122003440 in words is "two hundred fifty-two billion, one hundred twenty-two million, three thousand, four hundred forty".