4247940 has 48 divisors (see below), whose sum is σ = 12051648. Its totient is φ = 1117824.

The previous prime is 4247923. The next prime is 4247981. The reversal of 4247940 is 497424.

4247940 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 4247898 and 4247907.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4554 + ... + 5406.

It is an arithmetic number, because the mean of its divisors is an integer number (251076).

Almost surely, 2^4247940 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4247940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6025824).

4247940 is an abundant number, since it is smaller than the sum of its proper divisors (7803708).

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

4247940 is a wasteful number, since it uses less digits than its factorization.

4247940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948 (or 946 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 4247940 is about 2061.0531288640. The cubic root of 4247940 is about 161.9544148527.

The spelling of 4247940 in words is "four million, two hundred forty-seven thousand, nine hundred forty".