1272267534 has 16 divisors (see below), whose sum is σ = 2598674688. Its totient is φ = 415065912.

The previous prime is 1272267467. The next prime is 1272267541. The reversal of 1272267534 is 4357622721.

It is a junction number, because it is equal to n+sod(n) for n = 1272267492 and 1272267501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2255512 + ... + 2256075.

It is an arithmetic number, because the mean of its divisors is an integer number (162417168).

Almost surely, 2^1272267534 is an apocalyptic number.

1272267534 is an abundant number, since it is smaller than the sum of its proper divisors (1326407154).

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

1272267534 is a wasteful number, since it uses less digits than its factorization.

1272267534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4511639.

The product of its digits is 141120, while the sum is 39.

The square root of 1272267534 is about 35668.8594434978. The cubic root of 1272267534 is about 1083.5762602412.

The spelling of 1272267534 in words is "one billion, two hundred seventy-two million, two hundred sixty-seven thousand, five hundred thirty-four".