1252052440 has 32 divisors (see below), whose sum is σ = 2834002080. Its totient is φ = 497819392.

The previous prime is 1252052437. The next prime is 1252052441. The reversal of 1252052440 is 442502521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252052441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87037 + ... + 100396.

It is an arithmetic number, because the mean of its divisors is an integer number (88562565).

Almost surely, 2^1252052440 is an apocalyptic number.

1252052440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1252052440 is an abundant number, since it is smaller than the sum of its proper divisors (1581949640).

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

1252052440 is a wasteful number, since it uses less digits than its factorization.

1252052440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187611 (or 187607 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 1252052440 is about 35384.3530391613. The cubic root of 1252052440 is about 1077.8066023475.

Adding to 1252052440 its reverse (442502521), we get a palindrome (1694554961).

The spelling of 1252052440 in words is "one billion, two hundred fifty-two million, fifty-two thousand, four hundred forty".