542131104021 has 16 divisors (see below), whose sum is σ = 778491202944. Its totient is φ = 333599194944.

The previous prime is 542131104001. The next prime is 542131104083. The reversal of 542131104021 is 120401131245.

It is not a de Polignac number, because 542131104021 - 2⁵ = 542131103989 is a prime.

It is a super-2 number, since 2×542131104021² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 542131103982 and 542131104000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542131104001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259000 + ... + 1073006.

It is an arithmetic number, because the mean of its divisors is an integer number (48655700184).

Almost surely, 2^542131104021 is an apocalyptic number.

It is an amenable number.

542131104021 is a deficient number, since it is larger than the sum of its proper divisors (236360098923).

542131104021 is a wasteful number, since it uses less digits than its factorization.

542131104021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831100.

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 542131104021 its reverse (120401131245), we get a palindrome (662532235266).

The spelling of 542131104021 in words is "five hundred forty-two billion, one hundred thirty-one million, one hundred four thousand, twenty-one".