142446181 has 8 divisors (see below), whose sum is σ = 143567424. Its totient is φ = 141329760.

The previous prime is 142446167. The next prime is 142446197. The reversal of 142446181 is 181644241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142446181 - 2¹⁵ = 142413413 is a prime.

It is a super-2 number, since 2×142446181² = 40581828962969522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142446131) 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, 76200 + ... + 78046.

It is an arithmetic number, because the mean of its divisors is an integer number (17945928).

Almost surely, 2^142446181 is an apocalyptic number.

It is an amenable number.

142446181 is a deficient number, since it is larger than the sum of its proper divisors (1121243).

142446181 is a wasteful number, since it uses less digits than its factorization.

142446181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2411.

The product of its digits is 6144, while the sum is 31.

The square root of 142446181 is about 11935.0819435813. The cubic root of 142446181 is about 522.2561987669.

The spelling of 142446181 in words is "one hundred forty-two million, four hundred forty-six thousand, one hundred eighty-one".