142166039 has 4 divisors (see below), whose sum is σ = 142338360. Its totient is φ = 141993720.

The previous prime is 142166029. The next prime is 142166071. The reversal of 142166039 is 930661241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142166039 is a prime.

It is a super-2 number, since 2×142166039² = 40422365289899042, 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 = 142165996 and 142166014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142166029) 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, 84917 + ... + 86574.

It is an arithmetic number, because the mean of its divisors is an integer number (35584590).

Almost surely, 2^142166039 is an apocalyptic number.

142166039 is a deficient number, since it is larger than the sum of its proper divisors (172321).

142166039 is an equidigital number, since it uses as much as digits as its factorization.

142166039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172320.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 142166039 is about 11923.3400941179. The cubic root of 142166039 is about 521.9136087659.

The spelling of 142166039 in words is "one hundred forty-two million, one hundred sixty-six thousand, thirty-nine".