1209755423 has 2 divisors, whose sum is σ = 1209755424. Its totient is φ = 1209755422.

The previous prime is 1209755401. The next prime is 1209755429. The reversal of 1209755423 is 3245579021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1209755423 - 2⁶ = 1209755359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1209755429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 604877711 + 604877712.

It is an arithmetic number, because the mean of its divisors is an integer number (604877712).

Almost surely, 2^1209755423 is an apocalyptic number.

1209755423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1209755423 is an equidigital number, since it uses as much as digits as its factorization.

1209755423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 1209755423 is about 34781.5385369883. The cubic root of 1209755423 is about 1065.5304352900.

The spelling of 1209755423 in words is "one billion, two hundred nine million, seven hundred fifty-five thousand, four hundred twenty-three".