142921800 has 384 divisors, whose sum is σ = 595200000. Its totient is φ = 30792960.

The previous prime is 142921799. The next prime is 142921813. The reversal of 142921800 is 8129241.

142921800 is digitally balanced in base 3, 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 (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 718101 + ... + 718299.

It is an arithmetic number, because the mean of its divisors is an integer number (1550000).

Almost surely, 2^142921800 is an apocalyptic number.

142921800 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 142921800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297600000).

142921800 is an abundant number, since it is smaller than the sum of its proper divisors (452278200).

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

142921800 is a wasteful number, since it uses less digits than its factorization.

142921800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 142921800 is about 11954.9905897077. The cubic root of 142921800 is about 522.8368134300.

The spelling of 142921800 in words is "one hundred forty-two million, nine hundred twenty-one thousand, eight hundred".