4243045257 has 12 divisors (see below), whose sum is σ = 6686010864. Its totient is φ = 2571542520.

The previous prime is 4243045223. The next prime is 4243045309. The reversal of 4243045257 is 7525403424.

It is not a de Polignac number, because 4243045257 - 2¹² = 4243041161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4243043257) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21429423 + ... + 21429620.

It is an arithmetic number, because the mean of its divisors is an integer number (557167572).

Almost surely, 2^4243045257 is an apocalyptic number.

It is an amenable number.

4243045257 is a deficient number, since it is larger than the sum of its proper divisors (2442965607).

4243045257 is a wasteful number, since it uses less digits than its factorization.

4243045257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42859060 (or 42859057 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 36.

The square root of 4243045257 is about 65138.6617685687. The cubic root of 4243045257 is about 1618.9218626589.

The spelling of 4243045257 in words is "four billion, two hundred forty-three million, forty-five thousand, two hundred fifty-seven".