141820081 has 4 divisors (see below), whose sum is σ = 152729332. Its totient is φ = 130910832.

The previous prime is 141820061. The next prime is 141820097. The reversal of 141820081 is 180028141.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 61089856 + 80730225 = 7816^2 + 8985^2 .

It is not a de Polignac number, because 141820081 - 2¹³ = 141811889 is a prime.

It is a super-2 number, since 2×141820081² = 40225870749693122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (141820031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5454606 + ... + 5454631.

It is an arithmetic number, because the mean of its divisors is an integer number (38182333).

Almost surely, 2^141820081 is an apocalyptic number.

It is an amenable number.

141820081 is a deficient number, since it is larger than the sum of its proper divisors (10909251).

141820081 is a wasteful number, since it uses less digits than its factorization.

141820081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10909250.

The product of its (nonzero) digits is 512, while the sum is 25.

The square root of 141820081 is about 11908.8236614705. The cubic root of 141820081 is about 521.4899097095.

The spelling of 141820081 in words is "one hundred forty-one million, eight hundred twenty thousand, eighty-one".