143132440 has 32 divisors (see below), whose sum is σ = 351326160. Its totient is φ = 52048000.

The previous prime is 143132411. The next prime is 143132441. The reversal of 143132440 is 44231341.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143132441) 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, 162211 + ... + 163090.

Almost surely, 2^143132440 is an apocalyptic number.

143132440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

143132440 is an abundant number, since it is smaller than the sum of its proper divisors (208193720).

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

143132440 is a wasteful number, since it uses less digits than its factorization.

143132440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325323 (or 325319 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 143132440 is about 11963.7970561189. The cubic root of 143132440 is about 523.0935419039.

Adding to 143132440 its reverse (44231341), we get a palindrome (187363781).

The spelling of 143132440 in words is "one hundred forty-three million, one hundred thirty-two thousand, four hundred forty".