143402246 has 12 divisors (see below), whose sum is σ = 232923132. Its totient is φ = 66185496.

The previous prime is 143402243. The next prime is 143402251. The reversal of 143402246 is 642204341.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143402243) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 211796 + ... + 212471.

It is an arithmetic number, because the mean of its divisors is an integer number (19410261).

Almost surely, 2^143402246 is an apocalyptic number.

143402246 is a deficient number, since it is larger than the sum of its proper divisors (89520886).

143402246 is a wasteful number, since it uses less digits than its factorization.

143402246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424295 (or 424282 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 143402246 is about 11975.0676824810. The cubic root of 143402246 is about 523.4220143532.

Adding to 143402246 its reverse (642204341), we get a palindrome (785606587).

The spelling of 143402246 in words is "one hundred forty-three million, four hundred two thousand, two hundred forty-six".