143942378 has 4 divisors (see below), whose sum is σ = 215913570. Its totient is φ = 71971188.

The previous prime is 143942377. The next prime is 143942413. The reversal of 143942378 is 873249341.

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

It can be written as a sum of positive squares in only one way, i.e., 106646929 + 37295449 = 10327^2 + 6107^2 .

It is not an unprimeable number, because it can be changed into a prime (143942377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35985593 + ... + 35985596.

Almost surely, 2^143942378 is an apocalyptic number.

143942378 is a deficient number, since it is larger than the sum of its proper divisors (71971192).

143942378 is an equidigital number, since it uses as much as digits as its factorization.

143942378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71971191.

The product of its digits is 145152, while the sum is 41.

The square root of 143942378 is about 11997.5988431019. The cubic root of 143942378 is about 524.0783563845.

The spelling of 143942378 in words is "one hundred forty-three million, nine hundred forty-two thousand, three hundred seventy-eight".