42420403 has 8 divisors (see below), whose sum is σ = 43547328. Its totient is φ = 41299944.

The previous prime is 42420401. The next prime is 42420419. The reversal of 42420403 is 30402424.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42420403 - 2¹ = 42420401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42420401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13500 + ... + 16342.

It is an arithmetic number, because the mean of its divisors is an integer number (5443416).

Almost surely, 2^42420403 is an apocalyptic number.

42420403 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

42420403 is a deficient number, since it is larger than the sum of its proper divisors (1126925).

42420403 is a wasteful number, since it uses less digits than its factorization.

42420403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3233.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 42420403 is about 6513.0947329207. The cubic root of 42420403 is about 348.7586035227.

Adding to 42420403 its reverse (30402424), we get a palindrome (72822827).

The spelling of 42420403 in words is "forty-two million, four hundred twenty thousand, four hundred three".