42605240 has 16 divisors (see below), whose sum is σ = 95861880. Its totient is φ = 17042080.

The previous prime is 42605237. The next prime is 42605243. The reversal of 42605240 is 4250624.

It is an interprime number because it is at equal distance from previous prime (42605237) and next prime (42605243).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42605243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 532526 + ... + 532605.

Almost surely, 2^42605240 is an apocalyptic number.

42605240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42605240 is an abundant number, since it is smaller than the sum of its proper divisors (53256640).

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

42605240 is a wasteful number, since it uses less digits than its factorization.

42605240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065142 (or 1065138 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 42605240 is about 6527.2689541645. The cubic root of 42605240 is about 349.2644143058.

Adding to 42605240 its reverse (4250624), we get a palindrome (46855864).

The spelling of 42605240 in words is "forty-two million, six hundred five thousand, two hundred forty".