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142255141 = 720322163
BaseRepresentation
bin10000111101010…
…10010000100101
3100220200022100221
420132222100211
5242404131031
622041004341
73345102010
oct1036522045
9326608327
10142255141
1173332436
123b7836b1
1323619952
1414c70377
15c74ea11
hex87aa425

142255141 has 4 divisors (see below), whose sum is σ = 162577312. Its totient is φ = 121932972.

The previous prime is 142255097. The next prime is 142255163. The reversal of 142255141 is 141552241.

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, and also an emirpimes, since its reverse is a distinct semiprime: 141552241 = 532670797.

It is not a de Polignac number, because 142255141 - 221 = 140157989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142255441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10161075 + ... + 10161088.

It is an arithmetic number, because the mean of its divisors is an integer number (40644328).

Almost surely, 2142255141 is an apocalyptic number.

It is an amenable number.

142255141 is a deficient number, since it is larger than the sum of its proper divisors (20322171).

142255141 is an equidigital number, since it uses as much as digits as its factorization.

142255141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20322170.

The product of its digits is 1600, while the sum is 25.

The square root of 142255141 is about 11927.0759618609. The cubic root of 142255141 is about 522.0226217547.

The spelling of 142255141 in words is "one hundred forty-two million, two hundred fifty-five thousand, one hundred forty-one".

Divisors: 1 7 20322163 142255141