542380909 has 8 divisors (see below), whose sum is σ = 620954048. Its totient is φ = 464080320.

The previous prime is 542380907. The next prime is 542380913. The reversal of 542380909 is 909083245.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 542380909 - 2¹ = 542380907 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542380901) 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, 63852 + ... + 71845.

It is an arithmetic number, because the mean of its divisors is an integer number (77619256).

Almost surely, 2^542380909 is an apocalyptic number.

It is an amenable number.

542380909 is a deficient number, since it is larger than the sum of its proper divisors (78573139).

542380909 is a wasteful number, since it uses less digits than its factorization.

542380909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136275.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 542380909 is about 23289.0727380890. The cubic root of 542380909 is about 815.5203416824.

The spelling of 542380909 in words is "five hundred forty-two million, three hundred eighty thousand, nine hundred nine".