41042640 has 160 divisors (see below), whose sum is σ = 134741376. Its totient is φ = 10321920.

The previous prime is 41042629. The next prime is 41042689. The reversal of 41042640 is 4624014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 423072 + ... + 423168.

Almost surely, 2^41042640 is an apocalyptic number.

41042640 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 41042640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67370688).

41042640 is an abundant number, since it is smaller than the sum of its proper divisors (93698736).

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

41042640 is a wasteful number, since it uses less digits than its factorization.

41042640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 41042640 is about 6406.4529967838. The cubic root of 41042640 is about 344.9412208200.

Adding to 41042640 its reverse (4624014), we get a palindrome (45666654).

The spelling of 41042640 in words is "forty-one million, forty-two thousand, six hundred forty".