542685787 has 8 divisors (see below), whose sum is σ = 641599200. Its totient is φ = 449119104.

The previous prime is 542685779. The next prime is 542685797. The reversal of 542685787 is 787586245.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 542685787 - 2³ = 542685779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542685797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1336462 + ... + 1336867.

It is an arithmetic number, because the mean of its divisors is an integer number (80199900).

Almost surely, 2^542685787 is an apocalyptic number.

542685787 is a deficient number, since it is larger than the sum of its proper divisors (98913413).

542685787 is a wasteful number, since it uses less digits than its factorization.

542685787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2673365.

The product of its digits is 3763200, while the sum is 52.

The square root of 542685787 is about 23295.6173345975. The cubic root of 542685787 is about 815.6731172408.

The spelling of 542685787 in words is "five hundred forty-two million, six hundred eighty-five thousand, seven hundred eighty-seven".