542365643 has 2 divisors, whose sum is σ = 542365644. Its totient is φ = 542365642.

The previous prime is 542365633. The next prime is 542365693. The reversal of 542365643 is 346563245.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 542365643 - 2¹⁶ = 542300107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 542365597 and 542365606.

It is not a weakly prime, because it can be changed into another prime (542365633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271182821 + 271182822.

It is an arithmetic number, because the mean of its divisors is an integer number (271182822).

Almost surely, 2^542365643 is an apocalyptic number.

542365643 is a deficient number, since it is larger than the sum of its proper divisors (1).

542365643 is an equidigital number, since it uses as much as digits as its factorization.

542365643 is an evil number, because the sum of its binary digits is even.

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

The square root of 542365643 is about 23288.7449855075. The cubic root of 542365643 is about 815.5126903251.

The spelling of 542365643 in words is "five hundred forty-two million, three hundred sixty-five thousand, six hundred forty-three".