542054209 has 4 divisors (see below), whose sum is σ = 542161620. Its totient is φ = 541946800.

The previous prime is 542054171. The next prime is 542054237. The reversal of 542054209 is 902450245.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10890000 + 531164209 = 3300^2 + 23047^2 .

It is a cyclic number.

It is not a de Polignac number, because 542054209 - 2⁹ = 542053697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542054509) 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, 45742 + ... + 56359.

It is an arithmetic number, because the mean of its divisors is an integer number (135540405).

Almost surely, 2^542054209 is an apocalyptic number.

It is an amenable number.

542054209 is a deficient number, since it is larger than the sum of its proper divisors (107411).

542054209 is a wasteful number, since it uses less digits than its factorization.

542054209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107410.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 542054209 is about 23282.0576625005. The cubic root of 542054209 is about 815.3565674766.

The spelling of 542054209 in words is "five hundred forty-two million, fifty-four thousand, two hundred nine".