141921257 has 4 divisors (see below), whose sum is σ = 142106580. Its totient is φ = 141735936.

The previous prime is 141921251. The next prime is 141921259. The reversal of 141921257 is 752129141.

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 105185536 + 36735721 = 10256^2 + 6061^2 .

It is a cyclic number.

It is not a de Polignac number, because 141921257 - 2²⁰ = 140872681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (141921251) 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, 91508 + ... + 93045.

It is an arithmetic number, because the mean of its divisors is an integer number (35526645).

Almost surely, 2^141921257 is an apocalyptic number.

It is an amenable number.

141921257 is a deficient number, since it is larger than the sum of its proper divisors (185323).

141921257 is an equidigital number, since it uses as much as digits as its factorization.

141921257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185322.

The product of its digits is 5040, while the sum is 32.

The square root of 141921257 is about 11913.0708467632. The cubic root of 141921257 is about 521.6138924362.

The spelling of 141921257 in words is "one hundred forty-one million, nine hundred twenty-one thousand, two hundred fifty-seven".