143401240 has 32 divisors (see below), whose sum is σ = 327947760. Its totient is φ = 56419200.

The previous prime is 143401207. The next prime is 143401241. The reversal of 143401240 is 42104341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143401241) 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, 26946 + ... + 31825.

Almost surely, 2^143401240 is an apocalyptic number.

143401240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

143401240 is an abundant number, since it is smaller than the sum of its proper divisors (184546520).

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

143401240 is a wasteful number, since it uses less digits than its factorization.

143401240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58843 (or 58839 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 143401240 is about 11975.0256784693. The cubic root of 143401240 is about 523.4207903747.

Adding to 143401240 its reverse (42104341), we get a palindrome (185505581).

It can be divided in two parts, 143401 and 240, that added together give a square (143641 = 379²).

The spelling of 143401240 in words is "one hundred forty-three million, four hundred one thousand, two hundred forty".