542638437 has 8 divisors (see below), whose sum is σ = 789292320. Its totient is φ = 328871760.

The previous prime is 542638417. The next prime is 542638441. The reversal of 542638437 is 734836245.

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

It is not a de Polignac number, because 542638437 - 2⁶ = 542638373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542638417) 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, 8221762 + ... + 8221827.

It is an arithmetic number, because the mean of its divisors is an integer number (98661540).

Almost surely, 2^542638437 is an apocalyptic number.

It is an amenable number.

542638437 is a deficient number, since it is larger than the sum of its proper divisors (246653883).

542638437 is a wasteful number, since it uses less digits than its factorization.

542638437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16443603.

The product of its digits is 483840, while the sum is 42.

The square root of 542638437 is about 23294.6010268474. The cubic root of 542638437 is about 815.6493937244.

The spelling of 542638437 in words is "five hundred forty-two million, six hundred thirty-eight thousand, four hundred thirty-seven".