1273471540 has 48 divisors (see below), whose sum is σ = 2921978304. Its totient is φ = 462355200.

The previous prime is 1273471499. The next prime is 1273471579. The reversal of 1273471540 is 451743721.

It is a junction number, because it is equal to n+sod(n) for n = 1273471496 and 1273471505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147832 + ... + 156208.

It is an arithmetic number, because the mean of its divisors is an integer number (60874548).

Almost surely, 2^1273471540 is an apocalyptic number.

1273471540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1273471540 is an abundant number, since it is smaller than the sum of its proper divisors (1648506764).

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

1273471540 is a wasteful number, since it uses less digits than its factorization.

1273471540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9088 (or 9086 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 1273471540 is about 35685.7330035408. The cubic root of 1273471540 is about 1083.9179653610.

The spelling of 1273471540 in words is "one billion, two hundred seventy-three million, four hundred seventy-one thousand, five hundred forty".