42028030 has 16 divisors (see below), whose sum is σ = 82527984. Its totient is φ = 15282880.

The previous prime is 42028013. The next prime is 42028031. The reversal of 42028030 is 3082024.

It is a happy number.

It is a super-3 number, since 3×42028030³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42027989 and 42028007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42028031) 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, 190927 + ... + 191146.

It is an arithmetic number, because the mean of its divisors is an integer number (5157999).

Almost surely, 2^42028030 is an apocalyptic number.

42028030 is a deficient number, since it is larger than the sum of its proper divisors (40499954).

42028030 is a wasteful number, since it uses less digits than its factorization.

42028030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382091.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 42028030 is about 6482.9028991648. The cubic root of 42028030 is about 347.6799750917.

The spelling of 42028030 in words is "forty-two million, twenty-eight thousand, thirty".