1229427 has 6 divisors (see below), whose sum is σ = 1775852. Its totient is φ = 819612.

The previous prime is 1229401. The next prime is 1229443. The reversal of 1229427 is 7249221.

It is not a de Polignac number, because 1229427 - 2¹¹ = 1227379 is a prime.

It is a super-2 number, since 2×1229427² = 3022981496658, which contains 22 as substring.

It is a Duffinian number.

1229427 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1229427.

It is not an unprimeable number, because it can be changed into a prime (1229447) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68293 + ... + 68310.

2^1229427 is an apocalyptic number.

1229427 is a deficient number, since it is larger than the sum of its proper divisors (546425).

1229427 is a wasteful number, since it uses less digits than its factorization.

1229427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136609 (or 136606 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 1229427 is about 1108.7952921978. The cubic root of 1229427 is about 107.1274865570.

It can be divided in two parts, 12294 and 27, that added together give a palindrome (12321).

The spelling of 1229427 in words is "one million, two hundred twenty-nine thousand, four hundred twenty-seven".