1226423403 has 8 divisors (see below), whose sum is σ = 1816923600. Its totient is φ = 817615584.

The previous prime is 1226423329. The next prime is 1226423417. The reversal of 1226423403 is 3043246221.

1226423403 is a `hidden beast` number, since 12 + 2 + 642 + 3 + 4 + 0 + 3 = 666.

It is not a de Polignac number, because 1226423403 - 2¹⁴ = 1226407019 is a prime.

It is a super-2 number, since 2×1226423403² = 3008228726852200818, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 45423089 = 1226423403 / (1 + 2 + 2 + 6 + 4 + 2 + 3 + 4 + 0 + 3).

It is not an unprimeable number, because it can be changed into a prime (1226423203) 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, 22711518 + ... + 22711571.

It is an arithmetic number, because the mean of its divisors is an integer number (227115450).

Almost surely, 2^1226423403 is an apocalyptic number.

1226423403 is a deficient number, since it is larger than the sum of its proper divisors (590500197).

1226423403 is an equidigital number, since it uses as much as digits as its factorization.

1226423403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45423098 (or 45423092 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 1226423403 is about 35020.3284250733. The cubic root of 1226423403 is about 1070.4017482854.

Adding to 1226423403 its reverse (3043246221), we get a palindrome (4269669624).

The spelling of 1226423403 in words is "one billion, two hundred twenty-six million, four hundred twenty-three thousand, four hundred three".