1243045227 has 16 divisors (see below), whose sum is σ = 1745372160. Its totient is φ = 784744992.

The previous prime is 1243045211. The next prime is 1243045231. The reversal of 1243045227 is 7225403421.

It is not a de Polignac number, because 1243045227 - 2⁴ = 1243045211 is a prime.

It is a super-2 number, since 2×1243045227² = 3090322872734963058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1243045194 and 1243045203.

It is not an unprimeable number, because it can be changed into a prime (1243045277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 261958 + ... + 266660.

It is an arithmetic number, because the mean of its divisors is an integer number (109085760).

Almost surely, 2^1243045227 is an apocalyptic number.

1243045227 is a deficient number, since it is larger than the sum of its proper divisors (502326933).

1243045227 is a wasteful number, since it uses less digits than its factorization.

1243045227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9362.

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 1243045227 is about 35256.8465265968. The cubic root of 1243045227 is about 1075.2158144677.

Adding to 1243045227 its reverse (7225403421), we get a palindrome (8468448648).

The spelling of 1243045227 in words is "one billion, two hundred forty-three million, forty-five thousand, two hundred twenty-seven".