1254405923 has 2 divisors, whose sum is σ = 1254405924. Its totient is φ = 1254405922.

The previous prime is 1254405907. The next prime is 1254405937. The reversal of 1254405923 is 3295044521.

It is a strong prime.

It is an emirp because it is prime and its reverse (3295044521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1254405923 - 2⁴ = 1254405907 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1254405323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627202961 + 627202962.

It is an arithmetic number, because the mean of its divisors is an integer number (627202962).

Almost surely, 2^1254405923 is an apocalyptic number.

1254405923 is the 18932-nd centered heptagonal number.

1254405923 is a deficient number, since it is larger than the sum of its proper divisors (1).

1254405923 is an equidigital number, since it uses as much as digits as its factorization.

1254405923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 1254405923 is about 35417.5934106201. The cubic root of 1254405923 is about 1078.4814973555.

The spelling of 1254405923 in words is "one billion, two hundred fifty-four million, four hundred five thousand, nine hundred twenty-three".