142200000 has 252 divisors, whose sum is σ = 515904480. Its totient is φ = 37440000.

The previous prime is 142199977. The next prime is 142200041. The reversal of 142200000 is 2241.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1799961 + ... + 1800039.

It is an arithmetic number, because the mean of its divisors is an integer number (2047240).

Almost surely, 2^142200000 is an apocalyptic number.

142200000 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 142200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257952240).

142200000 is an abundant number, since it is smaller than the sum of its proper divisors (373704480).

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

142200000 is an frugal number, since it uses more digits than its factorization.

142200000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 142200000 is about 11924.7641486111. The cubic root of 142200000 is about 521.9551641589.

Adding to 142200000 its reverse (2241), we get a palindrome (142202241).

The spelling of 142200000 in words is "one hundred forty-two million, two hundred thousand".