42643260 has 120 divisors (see below), whose sum is σ = 145995696. Its totient is φ = 10333440.

The previous prime is 42643247. The next prime is 42643267. The reversal of 42643260 is 6234624.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42643267) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 16624 + ... + 19016.

Almost surely, 2^42643260 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 42643260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72997848).

42643260 is an abundant number, since it is smaller than the sum of its proper divisors (103352436).

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

42643260 is a wasteful number, since it uses less digits than its factorization.

42643260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2425 (or 2414 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 42643260 is about 6530.1807019408. The cubic root of 42643260 is about 349.3682754351.

Adding to 42643260 its reverse (6234624), we get a palindrome (48877884).

The spelling of 42643260 in words is "forty-two million, six hundred forty-three thousand, two hundred sixty".