21433403042 has 8 divisors (see below), whose sum is σ = 32158742016. Its totient is φ = 10713822372.

The previous prime is 21433403023. The next prime is 21433403071. The reversal of 21433403042 is 24030433412.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1430258 + ... + 1445165.

It is an arithmetic number, because the mean of its divisors is an integer number (4019842752).

Almost surely, 2^21433403042 is an apocalyptic number.

21433403042 is a deficient number, since it is larger than the sum of its proper divisors (10725338974).

21433403042 is a wasteful number, since it uses less digits than its factorization.

21433403042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2879152.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 21433403042 its reverse (24030433412), we get a palindrome (45463836454).

The spelling of 21433403042 in words is "twenty-one billion, four hundred thirty-three million, four hundred three thousand, forty-two".