142605000 has 120 divisors (see below), whose sum is σ = 482775150. Its totient is φ = 38016000.

The previous prime is 142604963. The next prime is 142605017. The reversal of 142605000 is 506241.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 11410884 + 131194116 = 3378^2 + 11454^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 43416 + ... + 46584.

Almost surely, 2^142605000 is an apocalyptic number.

142605000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142605000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241387575).

142605000 is an abundant number, since it is smaller than the sum of its proper divisors (340170150).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142605000 is a wasteful number, since it uses less digits than its factorization.

142605000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3201 (or 3179 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 142605000 is about 11941.7335424971. The cubic root of 142605000 is about 522.4502215194.

The spelling of 142605000 in words is "one hundred forty-two million, six hundred five thousand".