1259749260 has 240 divisors, whose sum is σ = 4927507200. Its totient is φ = 261740160.

The previous prime is 1259749243. The next prime is 1259749273. The reversal of 1259749260 is 629479521.

1259749260 is a `hidden beast` number, since 12 + 5 + 97 + 492 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 119691 + ... + 129789.

It is an arithmetic number, because the mean of its divisors is an integer number (20531280).

Almost surely, 2^1259749260 is an apocalyptic number.

1259749260 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 1259749260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2463753600).

1259749260 is an abundant number, since it is smaller than the sum of its proper divisors (3667757940).

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

1259749260 is a wasteful number, since it uses less digits than its factorization.

1259749260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10138 (or 10127 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 1259749260 is about 35492.9466232377. The cubic root of 1259749260 is about 1080.0106480432.

The spelling of 1259749260 in words is "one billion, two hundred fifty-nine million, seven hundred forty-nine thousand, two hundred sixty".