143244742 has 4 divisors (see below), whose sum is σ = 214867116. Its totient is φ = 71622370.

The previous prime is 143244679. The next prime is 143244749. The reversal of 143244742 is 247442341.

143244742 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×143244742² = 41038112221293128, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143244749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35811184 + ... + 35811187.

It is an arithmetic number, because the mean of its divisors is an integer number (53716779).

Almost surely, 2^143244742 is an apocalyptic number.

143244742 is a deficient number, since it is larger than the sum of its proper divisors (71622374).

143244742 is an equidigital number, since it uses as much as digits as its factorization.

143244742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71622373.

The product of its digits is 21504, while the sum is 31.

The square root of 143244742 is about 11968.4895454690. The cubic root of 143244742 is about 523.2303128879.

The spelling of 143244742 in words is "one hundred forty-three million, two hundred forty-four thousand, seven hundred forty-two".