542774681 has 4 divisors (see below), whose sum is σ = 555397392. Its totient is φ = 530151972.

The previous prime is 542774669. The next prime is 542774693. The reversal of 542774681 is 186477245.

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 an interprime number because it is at equal distance from previous prime (542774669) and next prime (542774693).

It is a cyclic number.

It is not a de Polignac number, because 542774681 - 2²² = 538580377 is a prime.

It is a super-3 number, since 3×542774681³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542774611) 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, 6311291 + ... + 6311376.

It is an arithmetic number, because the mean of its divisors is an integer number (138849348).

Almost surely, 2^542774681 is an apocalyptic number.

It is an amenable number.

542774681 is a deficient number, since it is larger than the sum of its proper divisors (12622711).

542774681 is a wasteful number, since it uses less digits than its factorization.

542774681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12622710.

The product of its digits is 376320, while the sum is 44.

The square root of 542774681 is about 23297.5252119190. The cubic root of 542774681 is about 815.7176515976.

It can be divided in two parts, 5427 and 74681, that added together give a palindrome (80108).

The spelling of 542774681 in words is "five hundred forty-two million, seven hundred seventy-four thousand, six hundred eighty-one".