1245405223 has 2 divisors, whose sum is σ = 1245405224. Its totient is φ = 1245405222.

The previous prime is 1245405221. The next prime is 1245405229. The reversal of 1245405223 is 3225045421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1245405223 - 2¹ = 1245405221 is a prime.

Together with 1245405221, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1245405191 and 1245405200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1245405221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622702611 + 622702612.

It is an arithmetic number, because the mean of its divisors is an integer number (622702612).

Almost surely, 2^1245405223 is an apocalyptic number.

1245405223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1245405223 is an equidigital number, since it uses as much as digits as its factorization.

1245405223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 1245405223 is about 35290.2992761467. The cubic root of 1245405223 is about 1075.8958382215.

The spelling of 1245405223 in words is "one billion, two hundred forty-five million, four hundred five thousand, two hundred twenty-three".