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542638023 = 31447125003
BaseRepresentation
bin100000010101111…
…111111111000111
31101211001212102120
4200111333333013
52102403404043
6125502341023
716306230024
oct4025777707
91354055376
10542638023
11259339a84
1213188a773
13885635b5
14520d454b
153298b983
hex2057ffc7

542638023 has 8 divisors (see below), whose sum is σ = 724023168. Its totient is φ = 361505784.

The previous prime is 542638013. The next prime is 542638097. The reversal of 542638023 is 320836245.

It is a happy number.

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

It is not a de Polignac number, because 542638023 - 24 = 542638007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542638013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58161 + ... + 66842.

It is an arithmetic number, because the mean of its divisors is an integer number (90502896).

Almost surely, 2542638023 is an apocalyptic number.

542638023 is a deficient number, since it is larger than the sum of its proper divisors (181385145).

542638023 is a wasteful number, since it uses less digits than its factorization.

542638023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126453.

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 542638023 is about 23294.5921406665. The cubic root of 542638023 is about 815.6491862941.

The spelling of 542638023 in words is "five hundred forty-two million, six hundred thirty-eight thousand, twenty-three".

Divisors: 1 3 1447 4341 125003 375009 180879341 542638023