42040403 has 8 divisors (see below), whose sum is σ = 42705600. Its totient is φ = 41378688.

The previous prime is 42040387. The next prime is 42040409. The reversal of 42040403 is 30404024.

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 42040403 - 2⁴ = 42040387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42040409) 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, 33593 + ... + 34821.

It is an arithmetic number, because the mean of its divisors is an integer number (5338200).

Almost surely, 2^42040403 is an apocalyptic number.

42040403 is a deficient number, since it is larger than the sum of its proper divisors (665197).

42040403 is a wasteful number, since it uses less digits than its factorization.

42040403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1741.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 42040403 is about 6483.8571082343. The cubic root of 42040403 is about 347.7140905955.

Adding to 42040403 its reverse (30404024), we get a palindrome (72444427).

The spelling of 42040403 in words is "forty-two million, forty thousand, four hundred three".