1272722 has 32 divisors (see below), whose sum is σ = 2286144. Its totient is φ = 524800.

The previous prime is 1272679. The next prime is 1272749. The reversal of 1272722 is 2272721.

It is a super-3 number, since 3×1272722³ = 6184746572820333144, which contains 333 as substring.

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15293 + ... + 15375.

It is an arithmetic number, because the mean of its divisors is an integer number (71442).

2^1272722 is an apocalyptic number.

1272722 is a deficient number, since it is larger than the sum of its proper divisors (1013422).

1272722 is a wasteful number, since it uses less digits than its factorization.

1272722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154.

The product of its digits is 784, while the sum is 23.

The square root of 1272722 is about 1128.1498127465. The cubic root of 1272722 is about 108.3705266112.

Subtracting 1272722 from its reverse (2272721), we obtain a palindrome (999999).

The spelling of 1272722 in words is "one million, two hundred seventy-two thousand, seven hundred twenty-two".