140945220 has 288 divisors, whose sum is σ = 499000320. Its totient is φ = 31933440.

The previous prime is 140945213. The next prime is 140945237. The reversal of 140945220 is 22549041.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2103627 + ... + 2103693.

It is an arithmetic number, because the mean of its divisors is an integer number (1732640).

Almost surely, 2^140945220 is an apocalyptic number.

140945220 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 140945220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249500160).

140945220 is an abundant number, since it is smaller than the sum of its proper divisors (358055100).

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

140945220 is a wasteful number, since it uses less digits than its factorization.

140945220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 140945220 is about 11872.0352088427. The cubic root of 140945220 is about 520.4153732419.

The spelling of 140945220 in words is "one hundred forty million, nine hundred forty-five thousand, two hundred twenty".