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42130111042 = 2171239120913
BaseRepresentation
bin100111001111001001…
…100111101001000010
311000202010020101112001
4213033021213221002
51142240302023132
631204310254214
73021011015035
oct471711475102
9130663211461
1042130111042
111695a392a98
1281b935736a
133c85483ab6
14207945501c
1511689eace7
hex9cf267a42

42130111042 has 8 divisors (see below), whose sum is σ = 66912529356. Its totient is φ = 19825934592.

The previous prime is 42130111019. The next prime is 42130111043. The reversal of 42130111042 is 24011103124.

42130111042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 34637304321 + 7492806721 = 186111^2 + 86561^2 .

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

It is a super-2 number, since 2×421301110422 (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42130111043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 619560423 + ... + 619560490.

Almost surely, 242130111042 is an apocalyptic number.

42130111042 is a deficient number, since it is larger than the sum of its proper divisors (24782418314).

42130111042 is a wasteful number, since it uses less digits than its factorization.

42130111042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239120932.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 42130111042 its reverse (24011103124), we get a palindrome (66141214166).

The spelling of 42130111042 in words is "forty-two billion, one hundred thirty million, one hundred eleven thousand, forty-two".

Divisors: 1 2 17 34 1239120913 2478241826 21065055521 42130111042