143042581 has 8 divisors (see below), whose sum is σ = 156214944. Its totient is φ = 129898320.

The previous prime is 143042579. The next prime is 143042591. The reversal of 143042581 is 185240341.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 143042581 - 2¹ = 143042579 is a prime.

It is a super-2 number, since 2×143042581² = 40922359958283122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143042561) 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, 4446 + ... + 17488.

It is an arithmetic number, because the mean of its divisors is an integer number (19526868).

Almost surely, 2^143042581 is an apocalyptic number.

143042581 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

143042581 is a deficient number, since it is larger than the sum of its proper divisors (13172363).

143042581 is a wasteful number, since it uses less digits than its factorization.

143042581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14051.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 143042581 is about 11960.0410116354. The cubic root of 143042581 is about 522.9840523929.

The spelling of 143042581 in words is "one hundred forty-three million, forty-two thousand, five hundred eighty-one".