143678974 has 4 divisors (see below), whose sum is σ = 215518464. Its totient is φ = 71839486.

The previous prime is 143678971. The next prime is 143678987. The reversal of 143678974 is 479876341.

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

It is a Smith number, since the sum of its digits (49) 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 (143678971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35919742 + ... + 35919745.

It is an arithmetic number, because the mean of its divisors is an integer number (53879616).

Almost surely, 2^143678974 is an apocalyptic number.

143678974 is a deficient number, since it is larger than the sum of its proper divisors (71839490).

143678974 is an equidigital number, since it uses as much as digits as its factorization.

143678974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71839489.

The product of its digits is 1016064, while the sum is 49.

The square root of 143678974 is about 11986.6164533616. The cubic root of 143678974 is about 523.7584862006.

The spelling of 143678974 in words is "one hundred forty-three million, six hundred seventy-eight thousand, nine hundred seventy-four".