20403000442 has 8 divisors (see below), whose sum is σ = 33386728032. Its totient is φ = 9274091100.

The previous prime is 20403000427. The next prime is 20403000479. The reversal of 20403000442 is 24400030402.

20403000442 is nontrivially palindromic in base 15.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 463704534 + ... + 463704577.

It is an arithmetic number, because the mean of its divisors is an integer number (4173341004).

Almost surely, 2^20403000442 is an apocalyptic number.

20403000442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20403000442 is a deficient number, since it is larger than the sum of its proper divisors (12983727590).

20403000442 is a wasteful number, since it uses less digits than its factorization.

20403000442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927409124.

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

Adding to 20403000442 its reverse (24400030402), we get a palindrome (44803030844).

The spelling of 20403000442 in words is "twenty billion, four hundred three million, four hundred forty-two", and thus it is an aban number.