142166361 has 4 divisors (see below), whose sum is σ = 189555152. Its totient is φ = 94777572.

The previous prime is 142166333. The next prime is 142166369. The reversal of 142166361 is 163661241.

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 142166361 - 2¹¹ = 142164313 is a prime.

It is a super-2 number, since 2×142166361² = 40422548399964642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142166369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23694391 + ... + 23694396.

It is an arithmetic number, because the mean of its divisors is an integer number (47388788).

Almost surely, 2^142166361 is an apocalyptic number.

It is an amenable number.

142166361 is a deficient number, since it is larger than the sum of its proper divisors (47388791).

142166361 is an equidigital number, since it uses as much as digits as its factorization.

142166361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47388790.

The product of its digits is 5184, while the sum is 30.

The square root of 142166361 is about 11923.3535970380. The cubic root of 142166361 is about 521.9140028029.

The spelling of 142166361 in words is "one hundred forty-two million, one hundred sixty-six thousand, three hundred sixty-one".