1272076543 has 16 divisors (see below), whose sum is σ = 1354953600. Its totient is φ = 1190855520.

The previous prime is 1272076523. The next prime is 1272076591. The reversal of 1272076543 is 3456702721.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1272076543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272076513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1165428 + ... + 1166518.

It is an arithmetic number, because the mean of its divisors is an integer number (84684600).

Almost surely, 2^1272076543 is an apocalyptic number.

1272076543 is a deficient number, since it is larger than the sum of its proper divisors (82877057).

1272076543 is a wasteful number, since it uses less digits than its factorization.

1272076543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1782.

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 1272076543 is about 35666.1820636860. The cubic root of 1272076543 is about 1083.5220358833.

The spelling of 1272076543 in words is "one billion, two hundred seventy-two million, seventy-six thousand, five hundred forty-three".