140421280 has 48 divisors (see below), whose sum is σ = 336722400. Its totient is φ = 55325952.

The previous prime is 140421217. The next prime is 140421283. The reversal of 140421280 is 82124041.

It is not an unprimeable number, because it can be changed into a prime (140421283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4171 + ... + 17269.

It is an arithmetic number, because the mean of its divisors is an integer number (7015050).

Almost surely, 2^140421280 is an apocalyptic number.

140421280 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 140421280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168361200).

140421280 is an abundant number, since it is smaller than the sum of its proper divisors (196301120).

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

140421280 is a wasteful number, since it uses less digits than its factorization.

140421280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13181 (or 13173 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 140421280 is about 11849.9485230949. The cubic root of 140421280 is about 519.7697205221.

The spelling of 140421280 in words is "one hundred forty million, four hundred twenty-one thousand, two hundred eighty".