140143420 has 48 divisors (see below), whose sum is σ = 303942240. Its totient is φ = 54238464.

The previous prime is 140143403. The next prime is 140143463. The reversal of 140143420 is 24341041.

140143420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169047 + ... + 169873.

It is an arithmetic number, because the mean of its divisors is an integer number (6332130).

Almost surely, 2^140143420 is an apocalyptic number.

140143420 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 140143420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151971120).

140143420 is an abundant number, since it is smaller than the sum of its proper divisors (163798820).

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

140143420 is a wasteful number, since it uses less digits than its factorization.

140143420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1102 (or 1100 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 140143420 is about 11838.2186159912. The cubic root of 140143420 is about 519.4266609825.

Adding to 140143420 its reverse (24341041), we get a palindrome (164484461).

The spelling of 140143420 in words is "one hundred forty million, one hundred forty-three thousand, four hundred twenty".