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1442447007 = 31523315703
BaseRepresentation
bin101010111111001…
…1111111010011111
310201112012220022020
41111332133322133
510423231301012
6355044351223
750513411601
oct12576377237
93645186266
101442447007
11680250871
123430a5513
1319cac1051
14d9801171
158697ba8c
hex55f9fe9f

1442447007 has 8 divisors (see below), whose sum is σ = 1924531584. Its totient is φ = 960996888.

The previous prime is 1442446981. The next prime is 1442447009. The reversal of 1442447007 is 7007442441.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1442447007 - 27 = 1442446879 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442447009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153283 + ... + 162420.

It is an arithmetic number, because the mean of its divisors is an integer number (240566448).

Almost surely, 21442447007 is an apocalyptic number.

1442447007 is a deficient number, since it is larger than the sum of its proper divisors (482084577).

1442447007 is a wasteful number, since it uses less digits than its factorization.

1442447007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317229.

The product of its (nonzero) digits is 25088, while the sum is 33.

The square root of 1442447007 is about 37979.5603845016. The cubic root of 1442447007 is about 1129.8825176110.

Adding to 1442447007 its reverse (7007442441), we get a palindrome (8449889448).

The spelling of 1442447007 in words is "one billion, four hundred forty-two million, four hundred forty-seven thousand, seven".

Divisors: 1 3 1523 4569 315703 947109 480815669 1442447007