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142065793 = 197477147
BaseRepresentation
bin10000111011111…
…00000010000001
3100220022200122001
420131330002001
5242332101133
622032544001
73343352662
oct1035740201
9326280561
10142065793
1173213151
123b6b2001
13235816cc
1414c21369
15c71387d
hex877c081

142065793 has 4 divisors (see below), whose sum is σ = 149542960. Its totient is φ = 134588628.

The previous prime is 142065773. The next prime is 142065797. The reversal of 142065793 is 397560241.

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 not a de Polignac number, because 142065793 - 25 = 142065761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142065797) 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 3 ways as a sum of consecutive naturals, for example, 3738555 + ... + 3738592.

It is an arithmetic number, because the mean of its divisors is an integer number (37385740).

Almost surely, 2142065793 is an apocalyptic number.

It is an amenable number.

142065793 is a deficient number, since it is larger than the sum of its proper divisors (7477167).

142065793 is an equidigital number, since it uses as much as digits as its factorization.

142065793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7477166.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 142065793 is about 11919.1355810730. The cubic root of 142065793 is about 521.7909070427.

The spelling of 142065793 in words is "one hundred forty-two million, sixty-five thousand, seven hundred ninety-three".

Divisors: 1 19 7477147 142065793