1227138 has 16 divisors (see below), whose sum is σ = 2677536. Its totient is φ = 371840.

The previous prime is 1227133. The next prime is 1227143. The reversal of 1227138 is 8317221.

It is an interprime number because it is at equal distance from previous prime (1227133) and next prime (1227143).

It is not an unprimeable number, because it can be changed into a prime (1227131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9231 + ... + 9362.

It is an arithmetic number, because the mean of its divisors is an integer number (167346).

2^1227138 is an apocalyptic number.

1227138 is an abundant number, since it is smaller than the sum of its proper divisors (1450398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1227138 is a wasteful number, since it uses less digits than its factorization.

1227138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18609.

The product of its digits is 672, while the sum is 24.

The square root of 1227138 is about 1107.7626099485. The cubic root of 1227138 is about 107.0609604007.

It can be divided in two parts, 122 and 7138, that added together give a triangular number (7260 = T₁₂₀).

The spelling of 1227138 in words is "one million, two hundred twenty-seven thousand, one hundred thirty-eight".