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1442225213 = 11132775807
BaseRepresentation
bin101010111110110…
…1001110000111101
310201111210122001122
41111331221300331
510423202201323
6355035520325
750511466142
oct12575516075
93644718048
101442225213
1168010a170
12342bb90a5
1319ca44100
14d97843c9
1586935ec8
hex55f69c3d

1442225213 has 12 divisors (see below), whose sum is σ = 1703674368. Its totient is φ = 1210257360.

The previous prime is 1442225177. The next prime is 1442225231. The reversal of 1442225213 is 3125222441.

It is not a de Polignac number, because 1442225213 - 26 = 1442225149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442225233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 386045 + ... + 389762.

It is an arithmetic number, because the mean of its divisors is an integer number (141972864).

Almost surely, 21442225213 is an apocalyptic number.

1442225213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1442225213 is a deficient number, since it is larger than the sum of its proper divisors (261449155).

1442225213 is a wasteful number, since it uses less digits than its factorization.

1442225213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775844 (or 775831 counting only the distinct ones).

The product of its digits is 3840, while the sum is 26.

The square root of 1442225213 is about 37976.6403595684. The cubic root of 1442225213 is about 1129.8246035230.

Adding to 1442225213 its reverse (3125222441), we get a palindrome (4567447654).

The spelling of 1442225213 in words is "one billion, four hundred forty-two million, two hundred twenty-five thousand, two hundred thirteen".

Divisors: 1 11 13 143 169 1859 775807 8533877 10085491 110940401 131111383 1442225213