542082121 has 16 divisors (see below), whose sum is σ = 629309440. Its totient is φ = 457338960.

The previous prime is 542082119. The next prime is 542082139. The reversal of 542082121 is 121280245.

It is a cyclic number.

It is not a de Polignac number, because 542082121 - 2¹ = 542082119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542085121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201616 + ... + 204286.

It is an arithmetic number, because the mean of its divisors is an integer number (39331840).

Almost surely, 2^542082121 is an apocalyptic number.

It is an amenable number.

542082121 is a deficient number, since it is larger than the sum of its proper divisors (87227319).

542082121 is a wasteful number, since it uses less digits than its factorization.

542082121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3124.

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 542082121 is about 23282.6570863379. The cubic root of 542082121 is about 815.3705622896.

The spelling of 542082121 in words is "five hundred forty-two million, eighty-two thousand, one hundred twenty-one".