42401403 has 12 divisors (see below), whose sum is σ = 66814488. Its totient is φ = 25697760.

The previous prime is 42401399. The next prime is 42401423. The reversal of 42401403 is 30410424.

It is not a de Polignac number, because 42401403 - 2² = 42401399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42401423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 214050 + ... + 214247.

It is an arithmetic number, because the mean of its divisors is an integer number (5567874).

Almost surely, 2^42401403 is an apocalyptic number.

42401403 is a deficient number, since it is larger than the sum of its proper divisors (24413085).

42401403 is a wasteful number, since it uses less digits than its factorization.

42401403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428314 (or 428311 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 42401403 is about 6511.6359695548. The cubic root of 42401403 is about 348.7065263573.

Adding to 42401403 its reverse (30410424), we get a palindrome (72811827).

The spelling of 42401403 in words is "forty-two million, four hundred one thousand, four hundred three".