4201440 has 48 divisors (see below), whose sum is σ = 13236048. Its totient is φ = 1120256.

The previous prime is 4201429. The next prime is 4201447. The reversal of 4201440 is 441024.

It is a tau number, because it is divible by the number of its divisors (48).

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4201447) 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, 3897 + ... + 4856.

It is an arithmetic number, because the mean of its divisors is an integer number (275751).

Almost surely, 2^4201440 is an apocalyptic number.

4201440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4201440 is an abundant number, since it is smaller than the sum of its proper divisors (9034608).

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

4201440 is a wasteful number, since it uses less digits than its factorization.

4201440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8771 (or 8763 counting only the distinct ones).

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

The square root of 4201440 is about 2049.7414471099. The cubic root of 4201440 is about 161.3613016800.

Adding to 4201440 its reverse (441024), we get a palindrome (4642464).

The spelling of 4201440 in words is "four million, two hundred one thousand, four hundred forty".