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42045311551 = 149401703699
BaseRepresentation
bin100111001010000110…
…001000101000111111
311000112012200010111011
4213022012020220333
51142102044432201
631152040540051
73015631152145
oct471206105077
9130465603434
1042045311551
1116916533971
128194a81627
133c70a32c99
14206c09d595
15116134a151
hex9ca188a3f

42045311551 has 8 divisors (see below), whose sum is σ = 42433110000. Its totient is φ = 41658921600.

The previous prime is 42045311479. The next prime is 42045311617. The reversal of 42045311551 is 15511354024.

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 42045311551 - 29 = 42045311039 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 (42045311051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 292101 + ... + 411598.

It is an arithmetic number, because the mean of its divisors is an integer number (5304138750).

Almost surely, 242045311551 is an apocalyptic number.

42045311551 is a deficient number, since it is larger than the sum of its proper divisors (387798449).

42045311551 is a wasteful number, since it uses less digits than its factorization.

42045311551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704249.

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 42045311551 its reverse (15511354024), we get a palindrome (57556665575).

The spelling of 42045311551 in words is "forty-two billion, forty-five million, three hundred eleven thousand, five hundred fifty-one".

Divisors: 1 149 401 59749 703699 104851151 282183299 42045311551