4342640 has 40 divisors (see below), whose sum is σ = 10631760. Its totient is φ = 1645056.

The previous prime is 4342631. The next prime is 4342649. The reversal of 4342640 is 462434.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (4342631) and next prime (4342649).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4342649) 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, 92 + ... + 2948.

It is an arithmetic number, because the mean of its divisors is an integer number (265794).

Almost surely, 2^4342640 is an apocalyptic number.

4342640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4342640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5315880).

4342640 is an abundant number, since it is smaller than the sum of its proper divisors (6289120).

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

4342640 is a wasteful number, since it uses less digits than its factorization.

4342640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2889 (or 2883 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 4342640 is about 2083.9001895484. The cubic root of 4342640 is about 163.1490726011.

The spelling of 4342640 in words is "four million, three hundred forty-two thousand, six hundred forty".