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142430213 = 1931241817
BaseRepresentation
bin10000111110101…
…01000000000101
3100221000012112002
420133111000011
5242430231323
622044435045
73346431302
oct1037250005
9327005462
10142430213
1173441a22
123b848a85
132367b543
1414cb80a9
15c786828
hex87d5005

142430213 has 8 divisors (see below), whose sum is σ = 154763520. Its totient is φ = 130580640.

The previous prime is 142430207. The next prime is 142430219. The reversal of 142430213 is 312034241.

It is an interprime number because it is at equal distance from previous prime (142430207) and next prime (142430219).

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 142430213 - 26 = 142430149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142430219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120320 + ... + 121497.

It is an arithmetic number, because the mean of its divisors is an integer number (19345440).

Almost surely, 2142430213 is an apocalyptic number.

It is an amenable number.

142430213 is a deficient number, since it is larger than the sum of its proper divisors (12333307).

142430213 is a wasteful number, since it uses less digits than its factorization.

142430213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241867.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 142430213 is about 11934.4129725764. The cubic root of 142430213 is about 522.2366833294.

Adding to 142430213 its reverse (312034241), we get a palindrome (454464454).

The spelling of 142430213 in words is "one hundred forty-two million, four hundred thirty thousand, two hundred thirteen".

Divisors: 1 19 31 589 241817 4594523 7496327 142430213