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42154041 = 3107131321
BaseRepresentation
bin1010000011001…
…1100000111001
32221022122110210
42200303200321
541242412131
64103301333
71021206036
oct240634071
987278423
1042154041
1121881a56
121214a849
13896c127
14585438d
153a7a146
hex2833839

42154041 has 8 divisors (see below), whose sum is σ = 56731104. Its totient is φ = 27839840.

The previous prime is 42154031. The next prime is 42154043. The reversal of 42154041 is 14045124.

It is a happy number.

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 42154041 - 214 = 42137657 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42153999 and 42154017.

It is not an unprimeable number, because it can be changed into a prime (42154043) 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, 65340 + ... + 65981.

It is an arithmetic number, because the mean of its divisors is an integer number (7091388).

Almost surely, 242154041 is an apocalyptic number.

It is an amenable number.

42154041 is a deficient number, since it is larger than the sum of its proper divisors (14577063).

42154041 is a wasteful number, since it uses less digits than its factorization.

42154041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131431.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 42154041 is about 6492.6143424664. The cubic root of 42154041 is about 348.0271068197.

Adding to 42154041 its reverse (14045124), we get a palindrome (56199165).

It can be divided in two parts, 4215 and 4041, that added together give a triangular number (8256 = T128).

The spelling of 42154041 in words is "forty-two million, one hundred fifty-four thousand, forty-one".

Divisors: 1 3 107 321 131321 393963 14051347 42154041