42581032 has 16 divisors (see below), whose sum is σ = 85981140. Its totient is φ = 19652736.

The previous prime is 42581023. The next prime is 42581041. The reversal of 42581032 is 23018524.

It is an interprime number because it is at equal distance from previous prime (42581023) and next prime (42581041).

It can be written as a sum of positive squares in 2 ways, for example, as 37625956 + 4955076 = 6134^2 + 2226^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42580988 and 42581006.

It is an unprimeable number.

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, 204613 + ... + 204820.

Almost surely, 2^42581032 is an apocalyptic number.

It is an amenable number.

42581032 is an abundant number, since it is smaller than the sum of its proper divisors (43400108).

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

42581032 is a wasteful number, since it uses less digits than its factorization.

42581032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409452 (or 409448 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 42581032 is about 6525.4143163480. The cubic root of 42581032 is about 349.1982519057.

Adding to 42581032 its reverse (23018524), we get a palindrome (65599556).

The spelling of 42581032 in words is "forty-two million, five hundred eighty-one thousand, thirty-two".