42688132 has 6 divisors (see below), whose sum is σ = 74704238. Its totient is φ = 21344064.

The previous prime is 42688109. The next prime is 42688133. The reversal of 42688132 is 23188624.

It can be written as a sum of positive squares in only one way, i.e., 39639616 + 3048516 = 6296^2 + 1746^2 .

It is a super-3 number, since 3×42688132³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (42688133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5336013 + ... + 5336020.

Almost surely, 2^42688132 is an apocalyptic number.

It is an amenable number.

42688132 is a deficient number, since it is larger than the sum of its proper divisors (32016106).

42688132 is a wasteful number, since it uses less digits than its factorization.

42688132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10672037 (or 10672035 counting only the distinct ones).

The product of its digits is 18432, while the sum is 34.

The square root of 42688132 is about 6533.6155381228. The cubic root of 42688132 is about 349.4907751199.

The spelling of 42688132 in words is "forty-two million, six hundred eighty-eight thousand, one hundred thirty-two".