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542540041 = 19383953
BaseRepresentation
bin100000010101101…
…000000100001001
31101210212220000121
4200111220010021
52102342240131
6125500303241
716305341251
oct4025500411
91353786017
10542540041
112592823aa
12131841b21
138852ab14
14520aa961
153296c911
hex20568109

542540041 has 16 divisors (see below), whose sum is σ = 580184640. Its totient is φ = 507259872.

The previous prime is 542540027. The next prime is 542540051. The reversal of 542540041 is 140045245.

It is a happy number.

It is not a de Polignac number, because 542540041 - 213 = 542531849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 542539988 and 542540015.

It is not an unprimeable number, because it can be changed into a prime (542540051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 568821 + ... + 569773.

It is an arithmetic number, because the mean of its divisors is an integer number (36261540).

Almost surely, 2542540041 is an apocalyptic number.

It is an amenable number.

542540041 is a deficient number, since it is larger than the sum of its proper divisors (37644599).

542540041 is an frugal number, since it uses more digits than its factorization.

542540041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093 (or 1055 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 542540041 is about 23292.4889395702. The cubic root of 542540041 is about 815.6000904906.

Adding to 542540041 its reverse (140045245), we get a palindrome (682585286).

The spelling of 542540041 in words is "five hundred forty-two million, five hundred forty thousand, forty-one".

Divisors: 1 19 83 361 953 1577 6859 18107 29963 79099 344033 569297 1502881 6536627 28554739 542540041