143421663 has 24 divisors (see below), whose sum is σ = 240225664. Its totient is φ = 74503440.

The previous prime is 143421659. The next prime is 143421667. The reversal of 143421663 is 366124341.

143421663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (143421659) and next prime (143421667).

It is not a de Polignac number, because 143421663 - 2² = 143421659 is a prime.

It is a super-3 number, since 3×143421663³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 143421663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143421667) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25681 + ... + 30762.

Almost surely, 2^143421663 is an apocalyptic number.

143421663 is a deficient number, since it is larger than the sum of its proper divisors (96804001).

143421663 is a wasteful number, since it uses less digits than its factorization.

143421663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56475 (or 56464 counting only the distinct ones).

The product of its digits is 10368, while the sum is 30.

The square root of 143421663 is about 11975.8783811460. The cubic root of 143421663 is about 523.4456374759.

The spelling of 143421663 in words is "one hundred forty-three million, four hundred twenty-one thousand, six hundred sixty-three".