21301101424542 has 32 divisors (see below), whose sum is σ = 42767353249920. Its totient is φ = 7072893865440.

The previous prime is 21301101424523. The next prime is 21301101424571. The reversal of 21301101424542 is 24542410110312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4828009 + ... + 8118612.

It is an arithmetic number, because the mean of its divisors is an integer number (1336479789060).

Almost surely, 2^{21301101424542} is an apocalyptic number.

21301101424542 is an abundant number, since it is smaller than the sum of its proper divisors (21466251825378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21301101424542 is a wasteful number, since it uses less digits than its factorization.

21301101424542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12947688.

The product of its (nonzero) digits is 7680, while the sum is 30.

Adding to 21301101424542 its reverse (24542410110312), we get a palindrome (45843511534854).

The spelling of 21301101424542 in words is "twenty-one trillion, three hundred one billion, one hundred one million, four hundred twenty-four thousand, five hundred forty-two".