42030128 has 40 divisors (see below), whose sum is σ = 97969920. Its totient is φ = 17064000.

The previous prime is 42030127. The next prime is 42030143. The reversal of 42030128 is 82103024.

It is not an unprimeable number, because it can be changed into a prime (42030127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7748 + ... + 12003.

It is an arithmetic number, because the mean of its divisors is an integer number (2449248).

Almost surely, 2^42030128 is an apocalyptic number.

It is an amenable number.

42030128 is an abundant number, since it is smaller than the sum of its proper divisors (55939792).

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

42030128 is a wasteful number, since it uses less digits than its factorization.

42030128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19785 (or 19779 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 42030128 is about 6483.0647073741. The cubic root of 42030128 is about 347.6857602820.

The spelling of 42030128 in words is "forty-two million, thirty thousand, one hundred twenty-eight".