42428027 has 2 divisors, whose sum is σ = 42428028. Its totient is φ = 42428026.

The previous prime is 42428017. The next prime is 42428041. The reversal of 42428027 is 72082424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42428027 - 2¹⁶ = 42362491 is a prime.

It is a super-2 number, since 2×42428027² = 3600274950225458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42428017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21214013 + 21214014.

It is an arithmetic number, because the mean of its divisors is an integer number (21214014).

Almost surely, 2^42428027 is an apocalyptic number.

42428027 is a deficient number, since it is larger than the sum of its proper divisors (1).

42428027 is an equidigital number, since it uses as much as digits as its factorization.

42428027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7168, while the sum is 29.

The square root of 42428027 is about 6513.6799890692. The cubic root of 42428027 is about 348.7794957988.

The spelling of 42428027 in words is "forty-two million, four hundred twenty-eight thousand, twenty-seven".