1226126345 has 4 divisors (see below), whose sum is σ = 1471351620. Its totient is φ = 980901072.

The previous prime is 1226126339. The next prime is 1226126371. The reversal of 1226126345 is 5436216221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5436216221 = 23 ⋅236357227.

It can be written as a sum of positive squares in 2 ways, for example, as 480617929 + 745508416 = 21923^2 + 27304^2 .

It is a cyclic number.

It is not a de Polignac number, because 1226126345 - 2⁴ = 1226126329 is a prime.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 122612630 + ... + 122612639.

It is an arithmetic number, because the mean of its divisors is an integer number (367837905).

Almost surely, 2^1226126345 is an apocalyptic number.

It is an amenable number.

1226126345 is a deficient number, since it is larger than the sum of its proper divisors (245225275).

1226126345 is an equidigital number, since it uses as much as digits as its factorization.

1226126345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245225274.

The product of its digits is 17280, while the sum is 32.

The square root of 1226126345 is about 35016.0869458596. The cubic root of 1226126345 is about 1070.3153188957.

The spelling of 1226126345 in words is "one billion, two hundred twenty-six million, one hundred twenty-six thousand, three hundred forty-five".