140234220 has 192 divisors, whose sum is σ = 520611840. Its totient is φ = 30640896.

The previous prime is 140234203. The next prime is 140234221. The reversal of 140234220 is 22432041.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 140234193 and 140234202.

It is not an unprimeable number, because it can be changed into a prime (140234221) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 86134 + ... + 87746.

It is an arithmetic number, because the mean of its divisors is an integer number (2711520).

Almost surely, 2^140234220 is an apocalyptic number.

140234220 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 140234220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260305920).

140234220 is an abundant number, since it is smaller than the sum of its proper divisors (380377620).

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

140234220 is a wasteful number, since it uses less digits than its factorization.

140234220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1661 (or 1653 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 140234220 is about 11842.0530314638. The cubic root of 140234220 is about 519.5388169403.

Adding to 140234220 its reverse (22432041), we get a palindrome (162666261).

The spelling of 140234220 in words is "one hundred forty million, two hundred thirty-four thousand, two hundred twenty".