4143657 has 24 divisors (see below), whose sum is σ = 6618304. Its totient is φ = 2258784.

The previous prime is 4143647. The next prime is 4143673. The reversal of 4143657 is 7563414.

It is not a de Polignac number, because 4143657 - 2⁴ = 4143641 is a prime.

4143657 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4143617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10923 + ... + 11295.

Almost surely, 2^4143657 is an apocalyptic number.

It is an amenable number.

4143657 is a deficient number, since it is larger than the sum of its proper divisors (2474647).

4143657 is a wasteful number, since it uses less digits than its factorization.

4143657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429 (or 406 counting only the distinct ones).

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

The square root of 4143657 is about 2035.5974552941. The cubic root of 4143657 is about 160.6181426516.

The spelling of 4143657 in words is "four million, one hundred forty-three thousand, six hundred fifty-seven".