143146240 has 36 divisors (see below), whose sum is σ = 342883044. Its totient is φ = 57257984.

The previous prime is 143146219. The next prime is 143146249. The reversal of 143146240 is 42641341.

143146240 is digitally balanced in base 3, 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 2 ways, for example, as 45373696 + 97772544 = 6736^2 + 9888^2 .

It is a super-2 number, since 2×143146240² = 40981692052275200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143146249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54637 + ... + 57196.

It is an arithmetic number, because the mean of its divisors is an integer number (9524529).

Almost surely, 2^143146240 is an apocalyptic number.

143146240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

143146240 is an abundant number, since it is smaller than the sum of its proper divisors (199736804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

143146240 is an equidigital number, since it uses as much as digits as its factorization.

143146240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111854 (or 111840 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 143146240 is about 11964.3737821919. The cubic root of 143146240 is about 523.1103525791.

Adding to 143146240 its reverse (42641341), we get a palindrome (185787581).

The spelling of 143146240 in words is "one hundred forty-three million, one hundred forty-six thousand, two hundred forty".