1272883412 has 6 divisors (see below), whose sum is σ = 2227545978. Its totient is φ = 636441704.

The previous prime is 1272883387. The next prime is 1272883421. The reversal of 1272883412 is 2143882721.

It can be written as a sum of positive squares in only one way, i.e., 1197436816 + 75446596 = 34604^2 + 8686^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159110423 + ... + 159110430.

It is an arithmetic number, because the mean of its divisors is an integer number (371257663).

Almost surely, 2^1272883412 is an apocalyptic number.

It is an amenable number.

1272883412 is a deficient number, since it is larger than the sum of its proper divisors (954662566).

1272883412 is a wasteful number, since it uses less digits than its factorization.

1272883412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318220857 (or 318220855 counting only the distinct ones).

The product of its digits is 43008, while the sum is 38.

The square root of 1272883412 is about 35677.4916719211. The cubic root of 1272883412 is about 1083.7510775412.

The spelling of 1272883412 in words is "one billion, two hundred seventy-two million, eight hundred eighty-three thousand, four hundred twelve".