141021421 has 2 divisors, whose sum is σ = 141021422. Its totient is φ = 141021420.

The previous prime is 141021383. The next prime is 141021431. The reversal of 141021421 is 124120141.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134235396 + 6786025 = 11586^2 + 2605^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-141021421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 141021395 and 141021404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (141021431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70510710 + 70510711.

It is an arithmetic number, because the mean of its divisors is an integer number (70510711).

Almost surely, 2^141021421 is an apocalyptic number.

It is an amenable number.

141021421 is a deficient number, since it is larger than the sum of its proper divisors (1).

141021421 is an equidigital number, since it uses as much as digits as its factorization.

141021421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 141021421 is about 11875.2440395977. The cubic root of 141021421 is about 520.5091425976.

Adding to 141021421 its reverse (124120141), we get a palindrome (265141562).

The spelling of 141021421 in words is "one hundred forty-one million, twenty-one thousand, four hundred twenty-one".