42428324387 has 2 divisors, whose sum is σ = 42428324388. Its totient is φ = 42428324386.

The previous prime is 42428324383. The next prime is 42428324443. The reversal of 42428324387 is 78342382424.

42428324387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42428324387 - 2² = 42428324383 is a prime.

It is a super-3 number, since 3×42428324387³ (a number of 33 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (42428324383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21214162193 + 21214162194.

It is an arithmetic number, because the mean of its divisors is an integer number (21214162194).

Almost surely, 2^42428324387 is an apocalyptic number.

42428324387 is a deficient number, since it is larger than the sum of its proper divisors (1).

42428324387 is an equidigital number, since it uses as much as digits as its factorization.

42428324387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2064384, while the sum is 47.

The spelling of 42428324387 in words is "forty-two billion, four hundred twenty-eight million, three hundred twenty-four thousand, three hundred eighty-seven".