42750032 has 20 divisors (see below), whose sum is σ = 89200020. Its totient is φ = 19730688.

The previous prime is 42750017. The next prime is 42750049. The reversal of 42750032 is 23005724.

It can be written as a sum of positive squares in 2 ways, for example, as 26460736 + 16289296 = 5144^2 + 4036^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102557 + ... + 102972.

It is an arithmetic number, because the mean of its divisors is an integer number (4460001).

Almost surely, 2^42750032 is an apocalyptic number.

It is an amenable number.

42750032 is an abundant number, since it is smaller than the sum of its proper divisors (46449988).

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

42750032 is a wasteful number, since it uses less digits than its factorization.

42750032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205550 (or 205544 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 42750032 is about 6538.3508624117. The cubic root of 42750032 is about 349.6596201035.

Adding to 42750032 its reverse (23005724), we get a palindrome (65755756).

The spelling of 42750032 in words is "forty-two million, seven hundred fifty thousand, thirty-two".