142473185 has 4 divisors (see below), whose sum is σ = 170967828. Its totient is φ = 113978544.

The previous prime is 142473173. The next prime is 142473187. The reversal of 142473185 is 581374241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 581374241 = 7 ⋅83053463.

It can be written as a sum of positive squares in 2 ways, for example, as 107910544 + 34562641 = 10388^2 + 5879^2 .

It is a cyclic number.

It is not a de Polignac number, because 142473185 - 2⁸ = 142472929 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (142473187) 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, 14247314 + ... + 14247323.

It is an arithmetic number, because the mean of its divisors is an integer number (42741957).

Almost surely, 2^142473185 is an apocalyptic number.

It is an amenable number.

142473185 is a deficient number, since it is larger than the sum of its proper divisors (28494643).

142473185 is an equidigital number, since it uses as much as digits as its factorization.

142473185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28494642.

The product of its digits is 26880, while the sum is 35.

The square root of 142473185 is about 11936.2131767156. The cubic root of 142473185 is about 522.2891986344.

The spelling of 142473185 in words is "one hundred forty-two million, four hundred seventy-three thousand, one hundred eighty-five".