143640273 has 8 divisors (see below), whose sum is σ = 218880448. Its totient is φ = 82080144.

The previous prime is 143640271. The next prime is 143640283. The reversal of 143640273 is 372046341.

143640273 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 143640273 - 2¹ = 143640271 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 143640273.

It is not an unprimeable number, because it can be changed into a prime (143640271) 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, 3419986 + ... + 3420027.

It is an arithmetic number, because the mean of its divisors is an integer number (27360056).

Almost surely, 2^143640273 is an apocalyptic number.

It is an amenable number.

143640273 is a deficient number, since it is larger than the sum of its proper divisors (75240175).

143640273 is an equidigital number, since it uses as much as digits as its factorization.

143640273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6840023.

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 143640273 is about 11985.0020025030. The cubic root of 143640273 is about 523.7114558968.

The spelling of 143640273 in words is "one hundred forty-three million, six hundred forty thousand, two hundred seventy-three".