42028403 has 12 divisors (see below), whose sum is σ = 45747912. Its totient is φ = 38580480.

The previous prime is 42028391. The next prime is 42028433. The reversal of 42028403 is 30482024.

It is not a de Polignac number, because 42028403 - 2⁶ = 42028339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42028433) 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, 10076 + ... + 13622.

It is an arithmetic number, because the mean of its divisors is an integer number (3812326).

Almost surely, 2^42028403 is an apocalyptic number.

42028403 is a deficient number, since it is larger than the sum of its proper divisors (3719509).

42028403 is a wasteful number, since it uses less digits than its factorization.

42028403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3622 (or 3605 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 42028403 is about 6482.9316670778. The cubic root of 42028403 is about 347.6810036454.

It can be divided in two parts, 4202 and 8403, that multiplied together give a triangular number (35309406 = T₈₄₀₃).

The spelling of 42028403 in words is "forty-two million, twenty-eight thousand, four hundred three".