142604181 has 6 divisors (see below), whose sum is σ = 205983830. Its totient is φ = 95069448.

The previous prime is 142604173. The next prime is 142604183. The reversal of 142604181 is 181406241.

It is a happy number.

142604181 is a `hidden beast` number, since 1 + 42 + 604 + 18 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 80730225 + 61873956 = 8985^2 + 7866^2 .

It is not a de Polignac number, because 142604181 - 2³ = 142604173 is a prime.

It is a super-2 number, since 2×142604181² = 40671904877361522, 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 (142604183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7922446 + ... + 7922463.

Almost surely, 2^142604181 is an apocalyptic number.

It is an amenable number.

142604181 is a deficient number, since it is larger than the sum of its proper divisors (63379649).

142604181 is a wasteful number, since it uses less digits than its factorization.

142604181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15844915 (or 15844912 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 142604181 is about 11941.6992509441. The cubic root of 142604181 is about 522.4492213498.

The spelling of 142604181 in words is "one hundred forty-two million, six hundred four thousand, one hundred eighty-one".