42643000 has 32 divisors (see below), whose sum is σ = 99786960. Its totient is φ = 17056800.

The previous prime is 42642997. The next prime is 42643001. The reversal of 42643000 is 34624.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42643001) 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, 20322 + ... + 22321.

Almost surely, 2^42643000 is an apocalyptic number.

42643000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42643000 is an abundant number, since it is smaller than the sum of its proper divisors (57143960).

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

42643000 is a wasteful number, since it uses less digits than its factorization.

42643000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42664 (or 42650 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 42643000 is about 6530.1607943450. The cubic root of 42643000 is about 349.3675653898.

Adding to 42643000 its reverse (34624), we get a palindrome (42677624).

The spelling of 42643000 in words is "forty-two million, six hundred forty-three thousand".