20340300542 has 16 divisors (see below), whose sum is σ = 30941827200. Its totient is φ = 10026479232.

The previous prime is 20340300523. The next prime is 20340300557. The reversal of 20340300542 is 24500304302.

It is a super-2 number, since 2×20340300542² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 321218 + ... + 379290.

It is an arithmetic number, because the mean of its divisors is an integer number (1933864200).

Almost surely, 2^20340300542 is an apocalyptic number.

20340300542 is a deficient number, since it is larger than the sum of its proper divisors (10601526658).

20340300542 is a wasteful number, since it uses less digits than its factorization.

20340300542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60547.

The product of its (nonzero) digits is 2880, while the sum is 23.

Adding to 20340300542 its reverse (24500304302), we get a palindrome (44840604844).

The spelling of 20340300542 in words is "twenty billion, three hundred forty million, three hundred thousand, five hundred forty-two".