542563643 has 4 divisors (see below), whose sum is σ = 560065728. Its totient is φ = 525061560.

The previous prime is 542563633. The next prime is 542563661. The reversal of 542563643 is 346365245.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346365245 = 5 ⋅69273049.

It is a cyclic number.

It is not a de Polignac number, because 542563643 - 2¹⁰ = 542562619 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 542563597 and 542563606.

It is not an unprimeable number, because it can be changed into a prime (542563603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8750996 + ... + 8751057.

It is an arithmetic number, because the mean of its divisors is an integer number (140016432).

Almost surely, 2^542563643 is an apocalyptic number.

542563643 is a deficient number, since it is larger than the sum of its proper divisors (17502085).

542563643 is a wasteful number, since it uses less digits than its factorization.

542563643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17502084.

The product of its digits is 259200, while the sum is 38.

The square root of 542563643 is about 23292.9955780702. The cubic root of 542563643 is about 815.6119172762.

The spelling of 542563643 in words is "five hundred forty-two million, five hundred sixty-three thousand, six hundred forty-three".