143978404 has 6 divisors (see below), whose sum is σ = 251962214. Its totient is φ = 71989200.

The previous prime is 143978399. The next prime is 143978407. The reversal of 143978404 is 404879341.

143978404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 80138304 + 63840100 = 8952^2 + 7990^2 .

It is not an unprimeable number, because it can be changed into a prime (143978407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17997297 + ... + 17997304.

Almost surely, 2^143978404 is an apocalyptic number.

It is an amenable number.

143978404 is a deficient number, since it is larger than the sum of its proper divisors (107983810).

143978404 is a wasteful number, since it uses less digits than its factorization.

143978404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35994605 (or 35994603 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 143978404 is about 11999.1001329266. The cubic root of 143978404 is about 524.1220749711.

It can be divided in two parts, 14397 and 8404, that added together give a square (22801 = 151²).

The spelling of 143978404 in words is "one hundred forty-three million, nine hundred seventy-eight thousand, four hundred four".