42028930 has 16 divisors (see below), whose sum is σ = 80102520. Its totient is φ = 15822592.

The previous prime is 42028927. The next prime is 42028937. The reversal of 42028930 is 3982024.

It can be written as a sum of positive squares in 4 ways, for example, as 29560969 + 12467961 = 5437^2 + 3531^2 .

It is not an unprimeable number, because it can be changed into a prime (42028937) 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, 123445 + ... + 123784.

Almost surely, 2^42028930 is an apocalyptic number.

42028930 is a deficient number, since it is larger than the sum of its proper divisors (38073590).

42028930 is a wasteful number, since it uses less digits than its factorization.

42028930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247253.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 42028930 is about 6482.9723121420. The cubic root of 42028930 is about 347.6824568461.

The spelling of 42028930 in words is "forty-two million, twenty-eight thousand, nine hundred thirty".