141221340 has 96 divisors (see below), whose sum is σ = 473175360. Its totient is φ = 34760448.

The previous prime is 141221321. The next prime is 141221369. The reversal of 141221340 is 43122141.

141221340 is a `hidden beast` number, since 1 + 412 + 213 + 40 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3039 + ... + 17078.

It is an arithmetic number, because the mean of its divisors is an integer number (4928910).

Almost surely, 2^141221340 is an apocalyptic number.

141221340 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 141221340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236587680).

141221340 is an abundant number, since it is smaller than the sum of its proper divisors (331954020).

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

141221340 is a wasteful number, since it uses less digits than its factorization.

141221340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20148 (or 20140 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 141221340 is about 11883.6585275747. The cubic root of 141221340 is about 520.7549930314.

Adding to 141221340 its reverse (43122141), we get a palindrome (184343481).

The spelling of 141221340 in words is "one hundred forty-one million, two hundred twenty-one thousand, three hundred forty".