1233420143 has 4 divisors (see below), whose sum is σ = 1234278720. Its totient is φ = 1232561568.

The previous prime is 1233420101. The next prime is 1233420161. The reversal of 1233420143 is 3410243321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1233420143 - 2²² = 1229225839 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 (1233420043) 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, 427130 + ... + 430007.

It is an arithmetic number, because the mean of its divisors is an integer number (308569680).

Almost surely, 2^1233420143 is an apocalyptic number.

1233420143 is a deficient number, since it is larger than the sum of its proper divisors (858577).

1233420143 is an equidigital number, since it uses as much as digits as its factorization.

1233420143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858576.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 1233420143 is about 35120.0817624333. The cubic root of 1233420143 is about 1072.4334353016.

Adding to 1233420143 its reverse (3410243321), we get a palindrome (4643663464).

The spelling of 1233420143 in words is "one billion, two hundred thirty-three million, four hundred twenty thousand, one hundred forty-three".