1231242760 has 48 divisors (see below), whose sum is σ = 3045048300. Its totient is φ = 447722880.

The previous prime is 1231242757. The next prime is 1231242767. The reversal of 1231242760 is 672421321.

It can be written as a sum of positive squares in 2 ways, for example, as 1228222116 + 3020644 = 35046^2 + 1738^2 .

It is not an unprimeable number, because it can be changed into a prime (1231242767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122355 + ... + 132034.

Almost surely, 2^1231242760 is an apocalyptic number.

1231242760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231242760 is an abundant number, since it is smaller than the sum of its proper divisors (1813805540).

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

1231242760 is a wasteful number, since it uses less digits than its factorization.

1231242760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254422 (or 254407 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 1231242760 is about 35089.0689531655. The cubic root of 1231242760 is about 1071.8020003551.

The spelling of 1231242760 in words is "one billion, two hundred thirty-one million, two hundred forty-two thousand, seven hundred sixty".