542668369 has 4 divisors (see below), whose sum is σ = 547740144. Its totient is φ = 537596596.

The previous prime is 542668363. The next prime is 542668397. The reversal of 542668369 is 963866245.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 542668369 - 2⁷ = 542668241 is a prime.

It is a super-2 number, since 2×542668369² = 588977917426240322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542668363) 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, 2535727 + ... + 2535940.

It is an arithmetic number, because the mean of its divisors is an integer number (136935036).

Almost surely, 2^542668369 is an apocalyptic number.

It is an amenable number.

542668369 is a deficient number, since it is larger than the sum of its proper divisors (5071775).

542668369 is a wasteful number, since it uses less digits than its factorization.

542668369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5071774.

The product of its digits is 1866240, while the sum is 49.

The square root of 542668369 is about 23295.2434844541. The cubic root of 542668369 is about 815.6643905542.

The spelling of 542668369 in words is "five hundred forty-two million, six hundred sixty-eight thousand, three hundred sixty-nine".