1252074240 has 144 divisors (see below), whose sum is σ = 4443247200. Its totient is φ = 333877248.

The previous prime is 1252074233. The next prime is 1252074247. The reversal of 1252074240 is 424702521.

It is an interprime number because it is at equal distance from previous prime (1252074233) and next prime (1252074247).

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252074247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16446 + ... + 52674.

Almost surely, 2^1252074240 is an apocalyptic number.

1252074240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1252074240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2221623600).

1252074240 is an abundant number, since it is smaller than the sum of its proper divisors (3191172960).

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

1252074240 is an equidigital number, since it uses as much as digits as its factorization.

1252074240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36259 (or 36239 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 1252074240 is about 35384.6610835825. The cubic root of 1252074240 is about 1077.8128576892.

Adding to 1252074240 its reverse (424702521), we get a palindrome (1676776761).

The spelling of 1252074240 in words is "one billion, two hundred fifty-two million, seventy-four thousand, two hundred forty".