1421907923 has 2 divisors, whose sum is σ = 1421907924. Its totient is φ = 1421907922.

The previous prime is 1421907919. The next prime is 1421907989. The reversal of 1421907923 is 3297091241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1421907923 - 2² = 1421907919 is a prime.

It is not a weakly prime, because it can be changed into another prime (1421907623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710953961 + 710953962.

It is an arithmetic number, because the mean of its divisors is an integer number (710953962).

Almost surely, 2^1421907923 is an apocalyptic number.

1421907923 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421907923 is an equidigital number, since it uses as much as digits as its factorization.

1421907923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 1421907923 is about 37708.1943746979. The cubic root of 1421907923 is about 1124.4940402688.

The spelling of 1421907923 in words is "one billion, four hundred twenty-one million, nine hundred seven thousand, nine hundred twenty-three".