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142033241 = 720290463
BaseRepresentation
bin10000111011101…
…00000101011001
3100220021000222102
420131310011121
5242330030431
622032133145
73343156040
oct1035640531
9326230872
10142033241
11731a0749
123b6971b5
132356c94c
1414c13557
15c708dcb
hex8774159

142033241 has 4 divisors (see below), whose sum is σ = 162323712. Its totient is φ = 121742772.

The previous prime is 142033187. The next prime is 142033247. The reversal of 142033241 is 142330241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 142033241 - 222 = 137838937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (142033247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10145225 + ... + 10145238.

It is an arithmetic number, because the mean of its divisors is an integer number (40580928).

Almost surely, 2142033241 is an apocalyptic number.

It is an amenable number.

142033241 is a deficient number, since it is larger than the sum of its proper divisors (20290471).

142033241 is an equidigital number, since it uses as much as digits as its factorization.

142033241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20290470.

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

The square root of 142033241 is about 11917.7699675736. The cubic root of 142033241 is about 521.7510507791.

Adding to 142033241 its reverse (142330241), we get a palindrome (284363482).

The spelling of 142033241 in words is "one hundred forty-two million, thirty-three thousand, two hundred forty-one".

Divisors: 1 7 20290463 142033241