542015857 has 2 divisors, whose sum is σ = 542015858. Its totient is φ = 542015856.

The previous prime is 542015843. The next prime is 542015893. The reversal of 542015857 is 758510245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 489250161 + 52765696 = 22119^2 + 7264^2 .

It is a cyclic number.

It is not a de Polignac number, because 542015857 - 2¹⁵ = 541983089 is a prime.

It is not a weakly prime, because it can be changed into another prime (542015897) 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 as a sum of consecutive naturals, namely, 271007928 + 271007929.

It is an arithmetic number, because the mean of its divisors is an integer number (271007929).

Almost surely, 2^542015857 is an apocalyptic number.

It is an amenable number.

542015857 is a deficient number, since it is larger than the sum of its proper divisors (1).

542015857 is an equidigital number, since it uses as much as digits as its factorization.

542015857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56000, while the sum is 37.

The square root of 542015857 is about 23281.2340093905. The cubic root of 542015857 is about 815.3373373627.

The spelling of 542015857 in words is "five hundred forty-two million, fifteen thousand, eight hundred fifty-seven".