1249332140 has 24 divisors (see below), whose sum is σ = 2998397472. Its totient is φ = 428342400.

The previous prime is 1249332131. The next prime is 1249332143. The reversal of 1249332140 is 412339421.

It is not an unprimeable number, because it can be changed into a prime (1249332143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4461761 + ... + 4462040.

It is an arithmetic number, because the mean of its divisors is an integer number (124933228).

Almost surely, 2^1249332140 is an apocalyptic number.

1249332140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1249332140 is an abundant number, since it is smaller than the sum of its proper divisors (1749065332).

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

1249332140 is a wasteful number, since it uses less digits than its factorization.

1249332140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8923817 (or 8923815 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 1249332140 is about 35345.8928307095. The cubic root of 1249332140 is about 1077.0254627381.

The spelling of 1249332140 in words is "one billion, two hundred forty-nine million, three hundred thirty-two thousand, one hundred forty".