1259740480 has 56 divisors (see below), whose sum is σ = 3080860488. Its totient is φ = 490272768.

The previous prime is 1259740441. The next prime is 1259740481. The reversal of 1259740480 is 840479521.

It can be written as a sum of positive squares in 4 ways, for example, as 783104256 + 476636224 = 27984^2 + 21832^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1259740481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41359 + ... + 65038.

Almost surely, 2^1259740480 is an apocalyptic number.

1259740480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1259740480 is an abundant number, since it is smaller than the sum of its proper divisors (1821120008).

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

1259740480 is a wasteful number, since it uses less digits than its factorization.

1259740480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106451 (or 106441 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 1259740480 is about 35492.8229364755. The cubic root of 1259740480 is about 1080.0081389419.

The spelling of 1259740480 in words is "one billion, two hundred fifty-nine million, seven hundred forty thousand, four hundred eighty".