4212240 has 40 divisors (see below), whose sum is σ = 13058688. Its totient is φ = 1123200.

The previous prime is 4212239. The next prime is 4212251. The reversal of 4212240 is 422124.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8536 + ... + 9015.

Almost surely, 2^4212240 is an apocalyptic number.

4212240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4212240 is an abundant number, since it is smaller than the sum of its proper divisors (8846448).

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

4212240 is a wasteful number, since it uses less digits than its factorization.

4212240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17567 (or 17561 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 4212240 is about 2052.3742348802. The cubic root of 4212240 is about 161.4994456620.

Adding to 4212240 its reverse (422124), we get a palindrome (4634364).

The spelling of 4212240 in words is "four million, two hundred twelve thousand, two hundred forty".