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142210131 = 376771911
BaseRepresentation
bin10000111100111…
…11010001010011
3100220121000121220
420132133101103
5242401211011
622040020123
73344523540
oct1036372123
9326530556
10142210131
1173301638
123b761643
132360230b
1414c5bbc7
15c741506
hex879f453

142210131 has 8 divisors (see below), whose sum is σ = 216701184. Its totient is φ = 81262920.

The previous prime is 142210097. The next prime is 142210141. The reversal of 142210131 is 131012241.

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

It is not a de Polignac number, because 142210131 - 26 = 142210067 is a prime.

It is a super-2 number, since 2×1422101312 = 40447442718074322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 142210131.

It is not an unprimeable number, because it can be changed into a prime (142210141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3385935 + ... + 3385976.

It is an arithmetic number, because the mean of its divisors is an integer number (27087648).

Almost surely, 2142210131 is an apocalyptic number.

142210131 is a deficient number, since it is larger than the sum of its proper divisors (74491053).

142210131 is an equidigital number, since it uses as much as digits as its factorization.

142210131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6771921.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 142210131 is about 11925.1889293210. The cubic root of 142210131 is about 521.9675593821.

Adding to 142210131 its reverse (131012241), we get a palindrome (273222372).

The spelling of 142210131 in words is "one hundred forty-two million, two hundred ten thousand, one hundred thirty-one".

Divisors: 1 3 7 21 6771911 20315733 47403377 142210131