1421456923 has 2 divisors, whose sum is σ = 1421456924. Its totient is φ = 1421456922.

The previous prime is 1421456821. The next prime is 1421456941. The reversal of 1421456923 is 3296541241.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1421456923 is a prime.

It is not a weakly prime, because it can be changed into another prime (1421456963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710728461 + 710728462.

It is an arithmetic number, because the mean of its divisors is an integer number (710728462).

Almost surely, 2^1421456923 is an apocalyptic number.

1421456923 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421456923 is an equidigital number, since it uses as much as digits as its factorization.

1421456923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 37.

The square root of 1421456923 is about 37702.2137678943. The cubic root of 1421456923 is about 1124.3751388893.

The spelling of 1421456923 in words is "one billion, four hundred twenty-one million, four hundred fifty-six thousand, nine hundred twenty-three".