542090019 has 4 divisors (see below), whose sum is σ = 722786696. Its totient is φ = 361393344.

The previous prime is 542090009. The next prime is 542090039. The reversal of 542090019 is 910090245.

It is a happy number.

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

It is not a de Polignac number, because 542090019 - 2⁸ = 542089763 is a prime.

It is a super-2 number, since 2×542090019² = 587723177398840722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542090009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90348334 + ... + 90348339.

It is an arithmetic number, because the mean of its divisors is an integer number (180696674).

Almost surely, 2^542090019 is an apocalyptic number.

542090019 is a deficient number, since it is larger than the sum of its proper divisors (180696677).

542090019 is a wasteful number, since it uses less digits than its factorization.

542090019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180696676.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 542090019 is about 23282.8266969455. The cubic root of 542090019 is about 815.3745221850.

The spelling of 542090019 in words is "five hundred forty-two million, ninety thousand, nineteen".