1272740084 has 24 divisors (see below), whose sum is σ = 2776888128. Its totient is φ = 495872640.

The previous prime is 1272740059. The next prime is 1272740089. The reversal of 1272740084 is 4800472721.

It is a happy number.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272740089) 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, 2065829 + ... + 2066444.

It is an arithmetic number, because the mean of its divisors is an integer number (115703672).

Almost surely, 2^1272740084 is an apocalyptic number.

1272740084 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1272740084 is an abundant number, since it is smaller than the sum of its proper divisors (1504148044).

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

1272740084 is a wasteful number, since it uses less digits than its factorization.

1272740084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4132295 (or 4132293 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 35.

The square root of 1272740084 is about 35675.4829539840. The cubic root of 1272740084 is about 1083.7103988471.

The spelling of 1272740084 in words is "one billion, two hundred seventy-two million, seven hundred forty thousand, eighty-four".