1272422 has 4 divisors (see below), whose sum is σ = 1908636. Its totient is φ = 636210.

The previous prime is 1272421. The next prime is 1272443. The reversal of 1272422 is 2242721.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2242721 = 13 ⋅172517.

It is a junction number, because it is equal to n+sod(n) for n = 1272394 and 1272403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272421) by changing a digit.

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 as a sum of consecutive naturals, namely, 318104 + ... + 318107.

It is an arithmetic number, because the mean of its divisors is an integer number (477159).

2^1272422 is an apocalyptic number.

1272422 is a deficient number, since it is larger than the sum of its proper divisors (636214).

1272422 is an equidigital number, since it uses as much as digits as its factorization.

1272422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636213.

The product of its digits is 448, while the sum is 20.

The square root of 1272422 is about 1128.0168438459. The cubic root of 1272422 is about 108.3620110798.

Subtracting 1272422 from its reverse (2242721), we obtain a cube (970299 = 99³).

The spelling of 1272422 in words is "one million, two hundred seventy-two thousand, four hundred twenty-two".