542400917 has 2 divisors, whose sum is σ = 542400918. Its totient is φ = 542400916.

The previous prime is 542400907. The next prime is 542400941. The reversal of 542400917 is 719004245.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 471150436 + 71250481 = 21706^2 + 8441^2 .

It is a cyclic number.

It is not a de Polignac number, because 542400917 - 2²⁰ = 541352341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542400907) 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, 271200458 + 271200459.

It is an arithmetic number, because the mean of its divisors is an integer number (271200459).

Almost surely, 2^542400917 is an apocalyptic number.

It is an amenable number.

542400917 is a deficient number, since it is larger than the sum of its proper divisors (1).

542400917 is an equidigital number, since it uses as much as digits as its factorization.

542400917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 542400917 is about 23289.5022918052. The cubic root of 542400917 is about 815.5303695245.

The spelling of 542400917 in words is "five hundred forty-two million, four hundred thousand, nine hundred seventeen".