542265385 has 24 divisors (see below), whose sum is σ = 673003800. Its totient is φ = 419420160.

The previous prime is 542265379. The next prime is 542265397. The reversal of 542265385 is 583562245.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 536524569 + 5740816 = 23163^2 + 2396^2 .

It is a de Polignac number, because none of the positive numbers 2^k-542265385 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1252129 + ... + 1252561.

It is an arithmetic number, because the mean of its divisors is an integer number (28041825).

Almost surely, 2^542265385 is an apocalyptic number.

It is an amenable number.

542265385 is a deficient number, since it is larger than the sum of its proper divisors (130738415).

542265385 is a wasteful number, since it uses less digits than its factorization.

542265385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669 (or 628 counting only the distinct ones).

The product of its digits is 288000, while the sum is 40.

The square root of 542265385 is about 23286.5923870368. The cubic root of 542265385 is about 815.4624371974.

It can be divided in two parts, 5422 and 65385, that added together give a palindrome (70807).

The spelling of 542265385 in words is "five hundred forty-two million, two hundred sixty-five thousand, three hundred eighty-five".