142020450 has 144 divisors (see below), whose sum is σ = 448471296. Its totient is φ = 31766400.

The previous prime is 142020409. The next prime is 142020479. The reversal of 142020450 is 54020241.

142020450 is a `hidden beast` number, since 14 + 202 + 0 + 450 = 666.

142020450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 63247 + ... + 65453.

It is an arithmetic number, because the mean of its divisors is an integer number (3114384).

Almost surely, 2^142020450 is an apocalyptic number.

142020450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 142020450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224235648).

142020450 is an abundant number, since it is smaller than the sum of its proper divisors (306450846).

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

142020450 is a wasteful number, since it uses less digits than its factorization.

142020450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2249 (or 2241 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 142020450 is about 11917.2333198608. The cubic root of 142020450 is about 521.7353879713.

Adding to 142020450 its reverse (54020241), we get a palindrome (196040691).

The spelling of 142020450 in words is "one hundred forty-two million, twenty thousand, four hundred fifty".