1212423673 has 2 divisors, whose sum is σ = 1212423674. Its totient is φ = 1212423672.

The previous prime is 1212423637. The next prime is 1212423683. The reversal of 1212423673 is 3763242121.

It is a happy number.

Together with previous prime (1212423637) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 705858624 + 506565049 = 26568^2 + 22507^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212423673 - 2⁹ = 1212423161 is a prime.

It is not a weakly prime, because it can be changed into another prime (1212423683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606211836 + 606211837.

It is an arithmetic number, because the mean of its divisors is an integer number (606211837).

Almost surely, 2^1212423673 is an apocalyptic number.

It is an amenable number.

1212423673 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212423673 is an equidigital number, since it uses as much as digits as its factorization.

1212423673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 31.

The square root of 1212423673 is about 34819.8746838641. The cubic root of 1212423673 is about 1066.3132419711.

Adding to 1212423673 its reverse (3763242121), we get a palindrome (4975665794).

The spelling of 1212423673 in words is "one billion, two hundred twelve million, four hundred twenty-three thousand, six hundred seventy-three".