1421223143 has 8 divisors (see below), whose sum is σ = 1481716368. Its totient is φ = 1361977344.

The previous prime is 1421223127. The next prime is 1421223173. The reversal of 1421223143 is 3413221241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1421223143 - 2⁴ = 1421223127 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 (1421223173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309530 + ... + 314087.

It is an arithmetic number, because the mean of its divisors is an integer number (185214546).

Almost surely, 2^1421223143 is an apocalyptic number.

1421223143 is a deficient number, since it is larger than the sum of its proper divisors (60493225).

1421223143 is an equidigital number, since it uses as much as digits as its factorization.

1421223143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623713.

The product of its digits is 1152, while the sum is 23.

The square root of 1421223143 is about 37699.1132919595. The cubic root of 1421223143 is about 1124.3134953678.

Adding to 1421223143 its reverse (3413221241), we get a palindrome (4834444384).

The spelling of 1421223143 in words is "one billion, four hundred twenty-one million, two hundred twenty-three thousand, one hundred forty-three".