21314254254542 has 16 divisors (see below), whose sum is σ = 32341653573264. Its totient is φ = 10534054200000.

The previous prime is 21314254254521. The next prime is 21314254254653. The reversal of 21314254254542 is 24545245241312.

It is a junction number, because it is equal to n+sod(n) for n = 21314254254493 and 21314254254502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87662384 + ... + 87905187.

It is an arithmetic number, because the mean of its divisors is an integer number (2021353348329).

Almost surely, 2^{21314254254542} is an apocalyptic number.

21314254254542 is a deficient number, since it is larger than the sum of its proper divisors (11027399318722).

21314254254542 is a wasteful number, since it uses less digits than its factorization.

21314254254542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175568275.

The product of its digits is 1536000, while the sum is 44.

Adding to 21314254254542 its reverse (24545245241312), we get a palindrome (45859499495854).

The spelling of 21314254254542 in words is "twenty-one trillion, three hundred fourteen billion, two hundred fifty-four million, two hundred fifty-four thousand, five hundred forty-two".