142185663 has 12 divisors (see below), whose sum is σ = 210389088. Its totient is φ = 92478240.

The previous prime is 142185653. The next prime is 142185691. The reversal of 142185663 is 366581241.

It is a happy number.

It is not a de Polignac number, because 142185663 - 2⁴ = 142185647 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142185613) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 192295 + ... + 193032.

It is an arithmetic number, because the mean of its divisors is an integer number (17532424).

Almost surely, 2^142185663 is an apocalyptic number.

142185663 is a deficient number, since it is larger than the sum of its proper divisors (68203425).

142185663 is a wasteful number, since it uses less digits than its factorization.

142185663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385374 (or 385371 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 142185663 is about 11924.1629894932. The cubic root of 142185663 is about 521.9376219116.

It can be divided in two parts, 14218 and 5663, that added together give a square (19881 = 141²).

The spelling of 142185663 in words is "one hundred forty-two million, one hundred eighty-five thousand, six hundred sixty-three".