141785820 has 144 divisors (see below), whose sum is σ = 474495840. Its totient is φ = 33984000.

The previous prime is 141785753. The next prime is 141785849. The reversal of 141785820 is 28587141.

141785820 is a `hidden beast` number, since 1 + 4 + 1 + 78 + 582 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 199626 + ... + 200334.

It is an arithmetic number, because the mean of its divisors is an integer number (3295110).

Almost surely, 2^141785820 is an apocalyptic number.

141785820 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 141785820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237247920).

141785820 is an abundant number, since it is smaller than the sum of its proper divisors (332710020).

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

141785820 is a wasteful number, since it uses less digits than its factorization.

141785820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836 (or 831 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 36.

The square root of 141785820 is about 11907.3851033718. The cubic root of 141785820 is about 521.4479123548.

The spelling of 141785820 in words is "one hundred forty-one million, seven hundred eighty-five thousand, eight hundred twenty".