142100800 has 42 divisors (see below), whose sum is σ = 349660718. Its totient is φ = 56839680.

The previous prime is 142100797. The next prime is 142100813. The reversal of 142100800 is 8001241.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 49787136 + 92313664 = 7056^2 + 9608^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42807 + ... + 46006.

Almost surely, 2^142100800 is an apocalyptic number.

142100800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142100800 is an abundant number, since it is smaller than the sum of its proper divisors (207559918).

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

142100800 is an equidigital number, since it uses as much as digits as its factorization.

142100800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88835 (or 88820 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 142100800 is about 11920.6040115424. The cubic root of 142100800 is about 521.8337623839.

The spelling of 142100800 in words is "one hundred forty-two million, one hundred thousand, eight hundred".