141821638 has 8 divisors (see below), whose sum is σ = 243122832. Its totient is φ = 60780696.

The previous prime is 141821591. The next prime is 141821639. The reversal of 141821638 is 836128141.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×141821638² = 40226754010006088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (141821639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5065045 + ... + 5065072.

It is an arithmetic number, because the mean of its divisors is an integer number (30390354).

Almost surely, 2^141821638 is an apocalyptic number.

141821638 is a deficient number, since it is larger than the sum of its proper divisors (101301194).

141821638 is a wasteful number, since it uses less digits than its factorization.

141821638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10130126.

The product of its digits is 9216, while the sum is 34.

The square root of 141821638 is about 11908.8890329871. The cubic root of 141821638 is about 521.4918181295.

Adding to 141821638 its reverse (836128141), we get a palindrome (977949779).

The spelling of 141821638 in words is "one hundred forty-one million, eight hundred twenty-one thousand, six hundred thirty-eight".