143400346 has 16 divisors (see below), whose sum is σ = 217435176. Its totient is φ = 70926336.

The previous prime is 143400307. The next prime is 143400347. The reversal of 143400346 is 643004341.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 139499721 + 3900625 = 11811^2 + 1975^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 143400346.

It is not an unprimeable number, because it can be changed into a prime (143400347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79810 + ... + 81586.

Almost surely, 2^143400346 is an apocalyptic number.

143400346 is a deficient number, since it is larger than the sum of its proper divisors (74034830).

143400346 is a wasteful number, since it uses less digits than its factorization.

143400346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2193.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 143400346 is about 11974.9883507250. The cubic root of 143400346 is about 523.4197026595.

Adding to 143400346 its reverse (643004341), we get a palindrome (786404687).

The spelling of 143400346 in words is "one hundred forty-three million, four hundred thousand, three hundred forty-six".