143891742 has 32 divisors (see below), whose sum is σ = 297277344. Its totient is φ = 46396800.

The previous prime is 143891719. The next prime is 143891753. The reversal of 143891742 is 247198341.

143891742 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 143891742.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38392 + ... + 41972.

It is an arithmetic number, because the mean of its divisors is an integer number (9289917).

Almost surely, 2^143891742 is an apocalyptic number.

143891742 is an abundant number, since it is smaller than the sum of its proper divisors (153385602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

143891742 is a wasteful number, since it uses less digits than its factorization.

143891742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3804.

The product of its digits is 48384, while the sum is 39.

The square root of 143891742 is about 11995.4884018951. The cubic root of 143891742 is about 524.0168958093.

The spelling of 143891742 in words is "one hundred forty-three million, eight hundred ninety-one thousand, seven hundred forty-two".