143540061 has 48 divisors (see below), whose sum is σ = 239345280. Its totient is φ = 76016640.

The previous prime is 143540011. The next prime is 143540071. The reversal of 143540061 is 160045341.

It is not a de Polignac number, because 143540061 - 2⁶ = 143539997 is a prime.

It is a super-2 number, since 2×143540061² = 41207498223767442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143540011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 177025 + ... + 177833.

It is an arithmetic number, because the mean of its divisors is an integer number (4986360).

Almost surely, 2^143540061 is an apocalyptic number.

It is an amenable number.

143540061 is a deficient number, since it is larger than the sum of its proper divisors (95805219).

143540061 is a wasteful number, since it uses less digits than its factorization.

143540061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914 (or 907 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 143540061 is about 11980.8205478590. The cubic root of 143540061 is about 523.5896368067.

The spelling of 143540061 in words is "one hundred forty-three million, five hundred forty thousand, sixty-one".