542507421 has 8 divisors (see below), whose sum is σ = 731471040. Its totient is φ = 357607712.

The previous prime is 542507411. The next prime is 542507443. The reversal of 542507421 is 124705245.

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 542507421 - 2⁵ = 542507389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542507411) 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 7 ways as a sum of consecutive naturals, for example, 1015665 + ... + 1016198.

It is an arithmetic number, because the mean of its divisors is an integer number (91433880).

Almost surely, 2^542507421 is an apocalyptic number.

It is an amenable number.

542507421 is a deficient number, since it is larger than the sum of its proper divisors (188963619).

542507421 is a wasteful number, since it uses less digits than its factorization.

542507421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2031955.

The product of its (nonzero) digits is 11200, while the sum is 30.

The square root of 542507421 is about 23291.7887033177. The cubic root of 542507421 is about 815.5837442881.

The spelling of 542507421 in words is "five hundred forty-two million, five hundred seven thousand, four hundred twenty-one".