143919643 has 4 divisors (see below), whose sum is σ = 164479600. Its totient is φ = 123359688.

The previous prime is 143919641. The next prime is 143919689. The reversal of 143919643 is 346919341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346919341 = 3989 ⋅86969.

It is a cyclic number.

It is not a de Polignac number, because 143919643 - 2¹ = 143919641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 143919596 and 143919605.

It is not an unprimeable number, because it can be changed into a prime (143919641) 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, 10279968 + ... + 10279981.

It is an arithmetic number, because the mean of its divisors is an integer number (41119900).

Almost surely, 2^143919643 is an apocalyptic number.

143919643 is a deficient number, since it is larger than the sum of its proper divisors (20559957).

143919643 is an equidigital number, since it uses as much as digits as its factorization.

143919643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20559956.

The product of its digits is 69984, while the sum is 40.

The square root of 143919643 is about 11996.6513244322. The cubic root of 143919643 is about 524.0507630541.

The spelling of 143919643 in words is "one hundred forty-three million, nine hundred nineteen thousand, six hundred forty-three".