1272807 has 32 divisors (see below), whose sum is σ = 2073600. Its totient is φ = 768384.

The previous prime is 1272749. The next prime is 1272811. The reversal of 1272807 is 7082721.

It is not a de Polignac number, because 1272807 - 2⁷ = 1272679 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272827) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21544 + ... + 21602.

It is an arithmetic number, because the mean of its divisors is an integer number (64800).

2^1272807 is an apocalyptic number.

1272807 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1272807 is a deficient number, since it is larger than the sum of its proper divisors (800793).

1272807 is a wasteful number, since it uses less digits than its factorization.

1272807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 1272807 is about 1128.1874844191. The cubic root of 1272807 is about 108.3729391019.

The spelling of 1272807 in words is "one million, two hundred seventy-two thousand, eight hundred seven".