20121032542 has 8 divisors (see below), whose sum is σ = 32503206456. Its totient is φ = 9286630392.

The previous prime is 20121032497. The next prime is 20121032597. The reversal of 20121032542 is 24523012102.

It is a happy number.

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

It is a congruent number.

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, 386942908 + ... + 386942959.

It is an arithmetic number, because the mean of its divisors is an integer number (4062900807).

Almost surely, 2^20121032542 is an apocalyptic number.

20121032542 is a deficient number, since it is larger than the sum of its proper divisors (12382173914).

20121032542 is a wasteful number, since it uses less digits than its factorization.

20121032542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773885882.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 20121032542 its reverse (24523012102), we get a palindrome (44644044644).

The spelling of 20121032542 in words is "twenty billion, one hundred twenty-one million, thirty-two thousand, five hundred forty-two".