4243940 has 24 divisors (see below), whose sum is σ = 8951040. Its totient is φ = 1690208.

The previous prime is 4243933. The next prime is 4243949. The reversal of 4243940 is 493424.

It is a super-2 number, since 2×4243940² = 36022053447200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4243949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8621 + ... + 9099.

It is an arithmetic number, because the mean of its divisors is an integer number (372960).

Almost surely, 2^4243940 is an apocalyptic number.

It is an amenable number.

4243940 is an abundant number, since it is smaller than the sum of its proper divisors (4707100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4243940 is a wasteful number, since it uses less digits than its factorization.

4243940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931 (or 929 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 4243940 is about 2060.0825226189. The cubic root of 4243940 is about 161.9035650211.

The spelling of 4243940 in words is "four million, two hundred forty-three thousand, nine hundred forty".