141577921 has 8 divisors (see below), whose sum is σ = 150429960. Its totient is φ = 133245184.

The previous prime is 141577883. The next prime is 141577937. The reversal of 141577921 is 129775141.

It can be written as a sum of positive squares in 4 ways, for example, as 64577296 + 77000625 = 8036^2 + 8775^2 .

It is not a de Polignac number, because 141577921 - 2²³ = 133189313 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (141577981) 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 7 ways as a sum of consecutive naturals, for example, 9496 + ... + 19321.

It is an arithmetic number, because the mean of its divisors is an integer number (18803745).

Almost surely, 2^141577921 is an apocalyptic number.

It is an amenable number.

141577921 is a deficient number, since it is larger than the sum of its proper divisors (8852039).

141577921 is an frugal number, since it uses more digits than its factorization.

141577921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28868 (or 28834 counting only the distinct ones).

The product of its digits is 17640, while the sum is 37.

The square root of 141577921 is about 11898.6520665158. The cubic root of 141577921 is about 521.1929232245.

The spelling of 141577921 in words is "one hundred forty-one million, five hundred seventy-seven thousand, nine hundred twenty-one".