4209240 has 64 divisors (see below), whose sum is σ = 14434560. Its totient is φ = 961920.

The previous prime is 4209229. The next prime is 4209259. The reversal of 4209240 is 429024.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1666 + ... + 3345.

It is an arithmetic number, because the mean of its divisors is an integer number (225540).

Almost surely, 2^4209240 is an apocalyptic number.

4209240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4209240 is an abundant number, since it is smaller than the sum of its proper divisors (10225320).

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

4209240 is a wasteful number, since it uses less digits than its factorization.

4209240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5032 (or 5028 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 4209240 is about 2051.6432438414. The cubic root of 4209240 is about 161.4610960424.

The spelling of 4209240 in words is "four million, two hundred nine thousand, two hundred forty".