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142050331 = 223636997
BaseRepresentation
bin10000111011110…
…00010000011011
3100220021220102101
420131320100123
5242331102311
622032344231
73343256623
oct1035702033
9326256371
10142050331
1173202575
123b6a5077
1323577667
1414c19883
15c70dec1
hex877841b

142050331 has 4 divisors (see below), whose sum is σ = 142687552. Its totient is φ = 141413112.

The previous prime is 142050313. The next prime is 142050343. The reversal of 142050331 is 133050241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133050241 = 827160883.

It is a cyclic number.

It is not a de Polignac number, because 142050331 - 27 = 142050203 is a prime.

It is a super-2 number, since 2×1420503312 = 40356593074419122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142050299 and 142050308.

It is not an unprimeable number, because it can be changed into a prime (142050301) 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, 318276 + ... + 318721.

It is an arithmetic number, because the mean of its divisors is an integer number (35671888).

Almost surely, 2142050331 is an apocalyptic number.

142050331 is a deficient number, since it is larger than the sum of its proper divisors (637221).

142050331 is an equidigital number, since it uses as much as digits as its factorization.

142050331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637220.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 142050331 is about 11918.4869425611. The cubic root of 142050331 is about 521.7719763215.

The spelling of 142050331 in words is "one hundred forty-two million, fifty thousand, three hundred thirty-one".

Divisors: 1 223 636997 142050331