542452121 has 2 divisors, whose sum is σ = 542452122. Its totient is φ = 542452120.

The previous prime is 542452111. The next prime is 542452151. The reversal of 542452121 is 121254245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 363855625 + 178596496 = 19075^2 + 13364^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-542452121 is a prime.

It is not a weakly prime, because it can be changed into another prime (542452111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271226060 + 271226061.

It is an arithmetic number, because the mean of its divisors is an integer number (271226061).

Almost surely, 2^542452121 is an apocalyptic number.

It is an amenable number.

542452121 is a deficient number, since it is larger than the sum of its proper divisors (1).

542452121 is an equidigital number, since it uses as much as digits as its factorization.

542452121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3200, while the sum is 26.

The square root of 542452121 is about 23290.6015594274. The cubic root of 542452121 is about 815.5560314176.

The spelling of 542452121 in words is "five hundred forty-two million, four hundred fifty-two thousand, one hundred twenty-one".