1421742473 has 2 divisors, whose sum is σ = 1421742474. Its totient is φ = 1421742472.

The previous prime is 1421742451. The next prime is 1421742503. The reversal of 1421742473 is 3742471241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 917605264 + 504137209 = 30292^2 + 22453^2 .

It is a cyclic number.

It is not a de Polignac number, because 1421742473 - 2¹⁸ = 1421480329 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1421742403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710871236 + 710871237.

It is an arithmetic number, because the mean of its divisors is an integer number (710871237).

Almost surely, 2^1421742473 is an apocalyptic number.

It is an amenable number.

1421742473 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421742473 is an equidigital number, since it uses as much as digits as its factorization.

1421742473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37632, while the sum is 35.

The square root of 1421742473 is about 37706.0004906381. Note that the first 3 decimals coincide. The cubic root of 1421742473 is about 1124.4504240467.

The spelling of 1421742473 in words is "one billion, four hundred twenty-one million, seven hundred forty-two thousand, four hundred seventy-three".