42428403 has 12 divisors (see below), whose sum is σ = 62125960. Its totient is φ = 27897696.

The previous prime is 42428369. The next prime is 42428417. The reversal of 42428403 is 30482424.

It is a happy number.

It is not a de Polignac number, because 42428403 - 2⁶ = 42428339 is a prime.

It is a super-2 number, since 2×42428403² = 3600338762260818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42428443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31633 + ... + 32946.

Almost surely, 2^42428403 is an apocalyptic number.

42428403 is a deficient number, since it is larger than the sum of its proper divisors (19697557).

42428403 is a wasteful number, since it uses less digits than its factorization.

42428403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64658 (or 64655 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 42428403 is about 6513.7088513381. The cubic root of 42428403 is about 348.7805260982.

The spelling of 42428403 in words is "forty-two million, four hundred twenty-eight thousand, four hundred three".