141239681 has 4 divisors (see below), whose sum is σ = 154079664. Its totient is φ = 128399700.

The previous prime is 141239669. The next prime is 141239699. The reversal of 141239681 is 186932141.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 186932141 = 11 ⋅16993831.

It is not a de Polignac number, because 141239681 - 2¹⁸ = 140977537 is a prime.

It is a super-2 number, since 2×141239681² = 39897294977963522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (141239381) 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, 6419975 + ... + 6419996.

It is an arithmetic number, because the mean of its divisors is an integer number (38519916).

Almost surely, 2^141239681 is an apocalyptic number.

141239681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

141239681 is a deficient number, since it is larger than the sum of its proper divisors (12839983).

141239681 is a wasteful number, since it uses less digits than its factorization.

141239681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12839982.

The product of its digits is 10368, while the sum is 35.

The square root of 141239681 is about 11884.4301924829. The cubic root of 141239681 is about 520.7775362577. Note that the first 3 decimals are identical.

The spelling of 141239681 in words is "one hundred forty-one million, two hundred thirty-nine thousand, six hundred eighty-one".