1254921673 has 2 divisors, whose sum is σ = 1254921674. Its totient is φ = 1254921672.

The previous prime is 1254921641. The next prime is 1254921677. The reversal of 1254921673 is 3761294521.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1034458569 + 220463104 = 32163^2 + 14848^2 .

It is a cyclic number.

It is not a de Polignac number, because 1254921673 - 2⁵ = 1254921641 is a prime.

It is not a weakly prime, because it can be changed into another prime (1254921677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627460836 + 627460837.

It is an arithmetic number, because the mean of its divisors is an integer number (627460837).

Almost surely, 2^1254921673 is an apocalyptic number.

It is an amenable number.

1254921673 is a deficient number, since it is larger than the sum of its proper divisors (1).

1254921673 is an equidigital number, since it uses as much as digits as its factorization.

1254921673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 40.

The square root of 1254921673 is about 35424.8736483279. The cubic root of 1254921673 is about 1078.6292832805.

The spelling of 1254921673 in words is "one billion, two hundred fifty-four million, nine hundred twenty-one thousand, six hundred seventy-three".