[go: up one dir, main page]

Search a number
-
+
42121135 = 572171923
BaseRepresentation
bin1010000010101…
…1011110101111
32221020222100001
42200223132233
541240334020
64102445131
71021011100
oct240533657
987228301
1042121135
112185a261
12121337a7
13895a164
1458463a7
153a7050a
hex282b7af

42121135 has 12 divisors (see below), whose sum is σ = 58798008. Its totient is φ = 28882896.

The previous prime is 42121099. The next prime is 42121147. The reversal of 42121135 is 53112124.

It is not a de Polignac number, because 42121135 - 27 = 42121007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85717 + ... + 86206.

It is an arithmetic number, because the mean of its divisors is an integer number (4899834).

Almost surely, 242121135 is an apocalyptic number.

42121135 is a deficient number, since it is larger than the sum of its proper divisors (16676873).

42121135 is a wasteful number, since it uses less digits than its factorization.

42121135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171942 (or 171935 counting only the distinct ones).

The product of its digits is 240, while the sum is 19.

The square root of 42121135 is about 6490.0797375687. The cubic root of 42121135 is about 347.9365250636.

Adding to 42121135 its reverse (53112124), we get a palindrome (95233259).

The spelling of 42121135 in words is "forty-two million, one hundred twenty-one thousand, one hundred thirty-five".

Divisors: 1 5 7 35 49 245 171923 859615 1203461 6017305 8424227 42121135