542215859 has 2 divisors, whose sum is σ = 542215860. Its totient is φ = 542215858.

The previous prime is 542215801. The next prime is 542215873. The reversal of 542215859 is 958512245.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-542215859 is a prime.

It is a super-2 number, since 2×542215859² = 587996075502215762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (542215879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271107929 + 271107930.

It is an arithmetic number, because the mean of its divisors is an integer number (271107930).

Almost surely, 2^542215859 is an apocalyptic number.

542215859 is a deficient number, since it is larger than the sum of its proper divisors (1).

542215859 is an equidigital number, since it uses as much as digits as its factorization.

542215859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144000, while the sum is 41.

The square root of 542215859 is about 23285.5289611381. The cubic root of 542215859 is about 815.4376105944.

The spelling of 542215859 in words is "five hundred forty-two million, two hundred fifteen thousand, eight hundred fifty-nine".