143478643 has 16 divisors (see below), whose sum is σ = 179216640. Its totient is φ = 111592800.

The previous prime is 143478611. The next prime is 143478661. The reversal of 143478643 is 346874341.

It is not a de Polignac number, because 143478643 - 2⁵ = 143478611 is a prime.

It is a super-2 number, since 2×143478643² = 41172241994242898, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 143478596 and 143478605.

It is not an unprimeable number, because it can be changed into a prime (143478043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49488 + ... + 52306.

It is an arithmetic number, because the mean of its divisors is an integer number (11201040).

Almost surely, 2^143478643 is an apocalyptic number.

143478643 is a deficient number, since it is larger than the sum of its proper divisors (35737997).

143478643 is a wasteful number, since it uses less digits than its factorization.

143478643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3498.

The product of its digits is 193536, while the sum is 40.

The square root of 143478643 is about 11978.2570935842. The cubic root of 143478643 is about 523.5149482128.

The spelling of 143478643 in words is "one hundred forty-three million, four hundred seventy-eight thousand, six hundred forty-three".