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142444341 = 32131217473
BaseRepresentation
bin10000111110110…
…00011100110101
3100221000220220100
420133120130311
5242431204331
622045024313
73346520424
oct1037303465
9327026810
10142444341
11734515a6
123b855099
1323684ac0
1414cbd2bb
15c78aae6
hex87d8735

142444341 has 12 divisors (see below), whose sum is σ = 221580268. Its totient is φ = 87657984.

The previous prime is 142444331. The next prime is 142444363. The reversal of 142444341 is 143444241.

It can be written as a sum of positive squares in 2 ways, for example, as 43362225 + 99082116 = 6585^2 + 9954^2 .

It is not a de Polignac number, because 142444341 - 26 = 142444277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142444331) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 608620 + ... + 608853.

Almost surely, 2142444341 is an apocalyptic number.

It is an amenable number.

142444341 is a deficient number, since it is larger than the sum of its proper divisors (79135927).

142444341 is a wasteful number, since it uses less digits than its factorization.

142444341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217492 (or 1217489 counting only the distinct ones).

The product of its digits is 6144, while the sum is 27.

The square root of 142444341 is about 11935.0048596555. The cubic root of 142444341 is about 522.2539500684.

Adding to 142444341 its reverse (143444241), we get a palindrome (285888582).

The spelling of 142444341 in words is "one hundred forty-two million, four hundred forty-four thousand, three hundred forty-one".

Divisors: 1 3 9 13 39 117 1217473 3652419 10957257 15827149 47481447 142444341