143640057 has 32 divisors (see below), whose sum is σ = 221253120. Its totient is φ = 81976320.

The previous prime is 143640047. The next prime is 143640061. The reversal of 143640057 is 750046341.

It is not a de Polignac number, because 143640057 - 2⁴ = 143640041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (143640047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 120418 + ... + 121604.

It is an arithmetic number, because the mean of its divisors is an integer number (6914160).

Almost surely, 2^143640057 is an apocalyptic number.

It is an amenable number.

143640057 is a deficient number, since it is larger than the sum of its proper divisors (77613063).

143640057 is a wasteful number, since it uses less digits than its factorization.

143640057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1413.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 143640057 is about 11984.9929912370. The cubic root of 143640057 is about 523.7111933851.

Adding to 143640057 its reverse (750046341), we get a palindrome (893686398).

The spelling of 143640057 in words is "one hundred forty-three million, six hundred forty thousand, fifty-seven".