1272125506 has 16 divisors (see below), whose sum is σ = 2020656960. Its totient is φ = 598974480.

The previous prime is 1272125501. The next prime is 1272125509. The reversal of 1272125506 is 6055212721.

It is not an unprimeable number, because it can be changed into a prime (1272125501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93885 + ... + 106576.

It is an arithmetic number, because the mean of its divisors is an integer number (126291060).

Almost surely, 2^1272125506 is an apocalyptic number.

1272125506 is a deficient number, since it is larger than the sum of its proper divisors (748531454).

1272125506 is a wasteful number, since it uses less digits than its factorization.

1272125506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200649.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 1272125506 is about 35666.8684636036. The cubic root of 1272125506 is about 1083.5359375124.

The spelling of 1272125506 in words is "one billion, two hundred seventy-two million, one hundred twenty-five thousand, five hundred six".