142081400 has 48 divisors (see below), whose sum is σ = 338415840. Its totient is φ = 55443200.

The previous prime is 142081399. The next prime is 142081403. The reversal of 142081400 is 4180241.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142081403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 464 + ... + 16863.

It is an arithmetic number, because the mean of its divisors is an integer number (7050330).

Almost surely, 2^142081400 is an apocalyptic number.

142081400 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 142081400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169207920).

142081400 is an abundant number, since it is smaller than the sum of its proper divisors (196334440).

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

142081400 is a wasteful number, since it uses less digits than its factorization.

142081400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17384 (or 17375 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 142081400 is about 11919.7902666112. The cubic root of 142081400 is about 521.8100138999.

The spelling of 142081400 in words is "one hundred forty-two million, eighty-one thousand, four hundred".