20040424403 has 2 divisors, whose sum is σ = 20040424404. Its totient is φ = 20040424402.

The previous prime is 20040424379. The next prime is 20040424433. The reversal of 20040424403 is 30442404002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20040424403 - 2¹⁰ = 20040423379 is a prime.

It is a super-2 number, since 2×20040424403² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20040424433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10020212201 + 10020212202.

It is an arithmetic number, because the mean of its divisors is an integer number (10020212202).

Almost surely, 2^20040424403 is an apocalyptic number.

20040424403 is a deficient number, since it is larger than the sum of its proper divisors (1).

20040424403 is an equidigital number, since it uses as much as digits as its factorization.

20040424403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 23.

Adding to 20040424403 its reverse (30442404002), we get a palindrome (50482828405).

The spelling of 20040424403 in words is "twenty billion, forty million, four hundred twenty-four thousand, four hundred three".