542442449 has 4 divisors (see below), whose sum is σ = 543604464. Its totient is φ = 541280436.

The previous prime is 542442437. The next prime is 542442491. The reversal of 542442449 is 944244245.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 542442449 - 2⁸ = 542442193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542442499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 580307 + ... + 581240.

It is an arithmetic number, because the mean of its divisors is an integer number (135901116).

Almost surely, 2^542442449 is an apocalyptic number.

It is an amenable number.

542442449 is a deficient number, since it is larger than the sum of its proper divisors (1162015).

542442449 is a wasteful number, since it uses less digits than its factorization.

542442449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162014.

The product of its digits is 184320, while the sum is 38.

The square root of 542442449 is about 23290.3939210997. The cubic root of 542442449 is about 815.5511842281.

The spelling of 542442449 in words is "five hundred forty-two million, four hundred forty-two thousand, four hundred forty-nine".