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42443551 = 371676869
BaseRepresentation
bin1010000111101…
…0001100011111
32221212100121101
42201322030133
541331143201
64113413531
71023523063
oct241721437
987770541
1042443551
1121a5a517
121226a2a7
138a40b37
1458cbaa3
153ad5d01
hex287a31f

42443551 has 8 divisors (see below), whose sum is σ = 43858080. Its totient is φ = 41043168.

The previous prime is 42443503. The next prime is 42443561. The reversal of 42443551 is 15534424.

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 42443551 - 29 = 42443039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42443561) 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, 2745 + ... + 9613.

It is an arithmetic number, because the mean of its divisors is an integer number (5482260).

Almost surely, 242443551 is an apocalyptic number.

42443551 is a deficient number, since it is larger than the sum of its proper divisors (1414529).

42443551 is a wasteful number, since it uses less digits than its factorization.

42443551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7073.

The product of its digits is 9600, while the sum is 28.

The square root of 42443551 is about 6514.8715259781. The cubic root of 42443551 is about 348.8220289469.

Adding to 42443551 its reverse (15534424), we get a palindrome (57977975).

The spelling of 42443551 in words is "forty-two million, four hundred forty-three thousand, five hundred fifty-one".

Divisors: 1 37 167 6179 6869 254153 1147123 42443551