1252031140 has 12 divisors (see below), whose sum is σ = 2629265436. Its totient is φ = 500812448.

The previous prime is 1252031117. The next prime is 1252031141. The reversal of 1252031140 is 411302521.

It can be written as a sum of positive squares in 2 ways, for example, as 961124004 + 290907136 = 31002^2 + 17056^2 .

It is not an unprimeable number, because it can be changed into a prime (1252031141) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 31300759 + ... + 31300798.

It is an arithmetic number, because the mean of its divisors is an integer number (219105453).

Almost surely, 2^1252031140 is an apocalyptic number.

1252031140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1252031140 is an abundant number, since it is smaller than the sum of its proper divisors (1377234296).

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

1252031140 is a wasteful number, since it uses less digits than its factorization.

1252031140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62601566 (or 62601564 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1252031140 is about 35384.0520573888. The cubic root of 1252031140 is about 1077.8004904068.

Adding to 1252031140 its reverse (411302521), we get a palindrome (1663333661).

It can be divided in two parts, 12520 and 31140, that added together give a triangular number (43660 = T₂₉₅).

The spelling of 1252031140 in words is "one billion, two hundred fifty-two million, thirty-one thousand, one hundred forty".