142069 has 8 divisors (see below), whose sum is σ = 154008. Its totient is φ = 130560.
The previous prime is 142067. The next prime is 142097. The reversal of 142069 is 960241.
It can be written as a sum of positive squares in 4 ways, for example, as 11025 + 131044 = 105^2 + 362^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 142069 - 21 = 142067 is a prime.
It is a super-2 number, since 2×1420692 = 40367201522, which contains 22 as substring.
It is a Duffinian number.
It is a plaindrome in base 14.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (142061) 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, 969 + ... + 1105.
It is an arithmetic number, because the mean of its divisors is an integer number (19251).
2142069 is an apocalyptic number.
It is an amenable number.
142069 is a deficient number, since it is larger than the sum of its proper divisors (11939).
142069 is a wasteful number, since it uses less digits than its factorization.
142069 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 215.
The product of its (nonzero) digits is 432, while the sum is 22.
The square root of 142069 is about 376.9204160032. The cubic root of 142069 is about 52.1794833324.
The spelling of 142069 in words is "one hundred forty-two thousand, sixty-nine".
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