1273006540 has 48 divisors (see below), whose sum is σ = 2949196320. Its totient is φ = 458565120.

The previous prime is 1273006513. The next prime is 1273006541. The reversal of 1273006540 is 456003721.

It is a junction number, because it is equal to n+sod(n) for n = 1273006499 and 1273006508.

It is not an unprimeable number, because it can be changed into a prime (1273006541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49050 + ... + 70369.

It is an arithmetic number, because the mean of its divisors is an integer number (61441590).

Almost surely, 2^1273006540 is an apocalyptic number.

1273006540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1273006540 is an abundant number, since it is smaller than the sum of its proper divisors (1676189780).

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

1273006540 is a wasteful number, since it uses less digits than its factorization.

1273006540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119482 (or 119480 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 1273006540 is about 35679.2171999331. The cubic root of 1273006540 is about 1083.7860207258.

The spelling of 1273006540 in words is "one billion, two hundred seventy-three million, six thousand, five hundred forty".