141787421 has 2 divisors, whose sum is σ = 141787422. Its totient is φ = 141787420.

The previous prime is 141787381. The next prime is 141787427. The reversal of 141787421 is 124787141.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131354521 + 10432900 = 11461^2 + 3230^2 .

It is an emirp because it is prime and its reverse (124787141) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 141787421 - 2¹⁰ = 141786397 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (141787427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70893710 + 70893711.

It is an arithmetic number, because the mean of its divisors is an integer number (70893711).

Almost surely, 2^141787421 is an apocalyptic number.

It is an amenable number.

141787421 is a deficient number, since it is larger than the sum of its proper divisors (1).

141787421 is an equidigital number, since it uses as much as digits as its factorization.

141787421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12544, while the sum is 35.

The square root of 141787421 is about 11907.4523303686. The cubic root of 141787421 is about 521.4498750216.

The spelling of 141787421 in words is "one hundred forty-one million, seven hundred eighty-seven thousand, four hundred twenty-one".