81026141 has 8 divisors (see below), whose sum is σ = 92730624. Its totient is φ = 69354000.

The previous prime is 81026129. The next prime is 81026149. The reversal of 81026141 is 14162018.

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

It is a cyclic number.

It is not a de Polignac number, because 81026141 - 2¹⁰ = 81025117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81026149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2450 + ... + 12963.

It is an arithmetic number, because the mean of its divisors is an integer number (11591328).

Almost surely, 2^81026141 is an apocalyptic number.

It is an amenable number.

81026141 is a deficient number, since it is larger than the sum of its proper divisors (11704483).

81026141 is a wasteful number, since it uses less digits than its factorization.

81026141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16171.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 81026141 is about 9001.4521606239. The cubic root of 81026141 is about 432.7214115748.

Adding to 81026141 its reverse (14162018), we get a palindrome (95188159).

The spelling of 81026141 in words is "eighty-one million, twenty-six thousand, one hundred forty-one".