20212004542 has 8 divisors (see below), whose sum is σ = 30323958696. Its totient is φ = 10104018312.

The previous prime is 20212004539. The next prime is 20212004543. The reversal of 20212004542 is 24540021202.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212004543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 979213 + ... + 999640.

It is an arithmetic number, because the mean of its divisors is an integer number (3790494837).

Almost surely, 2^20212004542 is an apocalyptic number.

20212004542 is a deficient number, since it is larger than the sum of its proper divisors (10111954154).

20212004542 is a wasteful number, since it uses less digits than its factorization.

20212004542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1983962.

The product of its (nonzero) digits is 1280, while the sum is 22.

Adding to 20212004542 its reverse (24540021202), we get a palindrome (44752025744).

The spelling of 20212004542 in words is "twenty billion, two hundred twelve million, four thousand, five hundred forty-two".