143201966 has 4 divisors (see below), whose sum is σ = 214802952. Its totient is φ = 71600982.

The previous prime is 143201923. The next prime is 143201987. The reversal of 143201966 is 669102341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 669102341 = 15619 ⋅42839.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35800490 + ... + 35800493.

It is an arithmetic number, because the mean of its divisors is an integer number (53700738).

Almost surely, 2^143201966 is an apocalyptic number.

143201966 is a deficient number, since it is larger than the sum of its proper divisors (71600986).

143201966 is an equidigital number, since it uses as much as digits as its factorization.

143201966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71600985.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 143201966 is about 11966.7023862048. The cubic root of 143201966 is about 523.1782250467.

The spelling of 143201966 in words is "one hundred forty-three million, two hundred one thousand, nine hundred sixty-six".