542669693 has 2 divisors, whose sum is σ = 542669694. Its totient is φ = 542669692.

The previous prime is 542669683. The next prime is 542669711. The reversal of 542669693 is 396966245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 493417369 + 49252324 = 22213^2 + 7018^2 .

It is a cyclic number.

It is not a de Polignac number, because 542669693 - 2⁶ = 542669629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542669683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271334846 + 271334847.

It is an arithmetic number, because the mean of its divisors is an integer number (271334847).

Almost surely, 2^542669693 is an apocalyptic number.

It is an amenable number.

542669693 is a deficient number, since it is larger than the sum of its proper divisors (1).

542669693 is an equidigital number, since it uses as much as digits as its factorization.

542669693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2099520, while the sum is 50.

The square root of 542669693 is about 23295.2719022552. The cubic root of 542669693 is about 815.6650539051.

The spelling of 542669693 in words is "five hundred forty-two million, six hundred sixty-nine thousand, six hundred ninety-three".