141021905 has 8 divisors (see below), whose sum is σ = 169857000. Its totient is φ = 112397056.

The previous prime is 141021899. The next prime is 141021917. The reversal of 141021905 is 509120141.

It is a happy number.

141021905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 4879681 + 136142224 = 2209^2 + 11668^2 .

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 141021905 - 2⁸ = 141021649 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51080 + ... + 53769.

It is an arithmetic number, because the mean of its divisors is an integer number (21232125).

Almost surely, 2^141021905 is an apocalyptic number.

It is an amenable number.

141021905 is a deficient number, since it is larger than the sum of its proper divisors (28835095).

141021905 is a wasteful number, since it uses less digits than its factorization.

141021905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105123.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 141021905 is about 11875.2644181088. The cubic root of 141021905 is about 520.5097380772.

The spelling of 141021905 in words is "one hundred forty-one million, twenty-one thousand, nine hundred five".