1260849240 has 512 divisors, whose sum is σ = 5101056000. Its totient is φ = 274337280.

The previous prime is 1260849229. The next prime is 1260849281. The reversal of 1260849240 is 429480621.

1260849240 is a `hidden beast` number, since 1 + 2 + 608 + 4 + 9 + 2 + 40 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1260849195 and 1260849204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 17758405 + ... + 17758475.

It is an arithmetic number, because the mean of its divisors is an integer number (9963000).

Almost surely, 2^1260849240 is an apocalyptic number.

1260849240 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 1260849240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2550528000).

1260849240 is an abundant number, since it is smaller than the sum of its proper divisors (3840206760).

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

1260849240 is an equidigital number, since it uses as much as digits as its factorization.

1260849240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 1260849240 is about 35508.4389969483. The cubic root of 1260849240 is about 1080.3249022481.

The spelling of 1260849240 in words is "one billion, two hundred sixty million, eight hundred forty-nine thousand, two hundred forty".