4240457 has 4 divisors (see below), whose sum is σ = 4566660. Its totient is φ = 3914256.

The previous prime is 4240451. The next prime is 4240469. The reversal of 4240457 is 7540424.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 383161 + 3857296 = 619^2 + 1964^2 .

It is a cyclic number.

It is not a de Polignac number, because 4240457 - 2¹² = 4236361 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4240451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163082 + ... + 163107.

It is an arithmetic number, because the mean of its divisors is an integer number (1141665).

Almost surely, 2^4240457 is an apocalyptic number.

It is an amenable number.

4240457 is a deficient number, since it is larger than the sum of its proper divisors (326203).

4240457 is a wasteful number, since it uses less digits than its factorization.

4240457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326202.

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 4240457 is about 2059.2369946172. The cubic root of 4240457 is about 161.8592615001.

The spelling of 4240457 in words is "four million, two hundred forty thousand, four hundred fifty-seven".