42606641 has 32 divisors (see below), whose sum is σ = 56920320. Its totient is φ = 31130880.

The previous prime is 42606623. The next prime is 42606643. The reversal of 42606641 is 14660624.

It is a de Polignac number, because none of the positive numbers 2^k-42606641 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42606643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158255 + ... + 158523.

It is an arithmetic number, because the mean of its divisors is an integer number (1778760).

Almost surely, 2^42606641 is an apocalyptic number.

It is an amenable number.

42606641 is a deficient number, since it is larger than the sum of its proper divisors (14313679).

42606641 is a wasteful number, since it uses less digits than its factorization.

42606641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326 (or 304 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 42606641 is about 6527.3762722858. The cubic root of 42606641 is about 349.2682425836.

It can be divided in two parts, 4260 and 6641, that added together give a palindrome (10901).

The spelling of 42606641 in words is "forty-two million, six hundred six thousand, six hundred forty-one".