542398565 has 8 divisors (see below), whose sum is σ = 664727040. Its totient is φ = 424686352.

The previous prime is 542398561. The next prime is 542398589. The reversal of 542398565 is 565893245.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 542398565 - 2² = 542398561 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542398561) 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 7 ways as a sum of consecutive naturals, for example, 1153805 + ... + 1154274.

It is an arithmetic number, because the mean of its divisors is an integer number (83090880).

Almost surely, 2^542398565 is an apocalyptic number.

It is an amenable number.

542398565 is a deficient number, since it is larger than the sum of its proper divisors (122328475).

542398565 is a wasteful number, since it uses less digits than its factorization.

542398565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2308131.

The product of its digits is 1296000, while the sum is 47.

The square root of 542398565 is about 23289.4517968972. The cubic root of 542398565 is about 815.5291907346.

The spelling of 542398565 in words is "five hundred forty-two million, three hundred ninety-eight thousand, five hundred sixty-five".