42190403 has 4 divisors (see below), whose sum is σ = 42303888. Its totient is φ = 42076920.

The previous prime is 42190399. The next prime is 42190409. The reversal of 42190403 is 30409124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42190403 - 2² = 42190399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42190409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56183 + ... + 56928.

It is an arithmetic number, because the mean of its divisors is an integer number (10575972).

Almost surely, 2^42190403 is an apocalyptic number.

42190403 is a deficient number, since it is larger than the sum of its proper divisors (113485).

42190403 is a wasteful number, since it uses less digits than its factorization.

42190403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113484.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 42190403 is about 6495.4139975832. The cubic root of 42190403 is about 348.1271472459.

Adding to 42190403 its reverse (30409124), we get a palindrome (72599527).

The spelling of 42190403 in words is "forty-two million, one hundred ninety thousand, four hundred three".