142011 has 12 divisors (see below), whose sum is σ = 212160. Its totient is φ = 91440.

The previous prime is 142007. The next prime is 142019. The reversal of 142011 is 110241.

It is a happy number.

It is not a de Polignac number, because 142011 - 2² = 142007 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

142011 is a lucky number.

It is a plaindrome in base 16.

It is a nialpdrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 141984 and 142002.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 142011.

It is not an unprimeable number, because it can be changed into a prime (142019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25 + ... + 533.

It is an arithmetic number, because the mean of its divisors is an integer number (17680).

2¹⁴²⁰¹¹ is an apocalyptic number.

142011 is a deficient number, since it is larger than the sum of its proper divisors (70149).

142011 is a wasteful number, since it uses less digits than its factorization.

142011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546 (or 543 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 142011 is about 376.8434688302. The cubic root of 142011 is about 52.1723815674.

Adding to 142011 its reverse (110241), we get a palindrome (252252).

It can be divided in two parts, 1420 and 11, that added together give a triangular number (1431 = T₅₃).

The spelling of 142011 in words is "one hundred forty-two thousand, eleven", and thus it is an iban number.