1421423143 has 4 divisors (see below), whose sum is σ = 1624483600. Its totient is φ = 1218362688.

The previous prime is 1421423131. The next prime is 1421423147. The reversal of 1421423143 is 3413241241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3413241241 = 51929 ⋅65729.

It is a cyclic number.

It is not a de Polignac number, because 1421423143 - 2¹⁷ = 1421292071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421423147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101530218 + ... + 101530231.

It is an arithmetic number, because the mean of its divisors is an integer number (406120900).

Almost surely, 2^1421423143 is an apocalyptic number.

1421423143 is a deficient number, since it is larger than the sum of its proper divisors (203060457).

1421423143 is an equidigital number, since it uses as much as digits as its factorization.

1421423143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203060456.

The product of its digits is 2304, while the sum is 25.

The square root of 1421423143 is about 37701.7657809286. The cubic root of 1421423143 is about 1124.3662321373.

Adding to 1421423143 its reverse (3413241241), we get a palindrome (4834664384).

The spelling of 1421423143 in words is "one billion, four hundred twenty-one million, four hundred twenty-three thousand, one hundred forty-three".