141545021 has 2 divisors, whose sum is σ = 141545022. Its totient is φ = 141545020.

The previous prime is 141544987. The next prime is 141545081. The reversal of 141545021 is 120545141.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140304025 + 1240996 = 11845^2 + 1114^2 .

It is a cyclic number.

It is not a de Polignac number, because 141545021 - 2¹⁸ = 141282877 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 (141545081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70772510 + 70772511.

It is an arithmetic number, because the mean of its divisors is an integer number (70772511).

Almost surely, 2^141545021 is an apocalyptic number.

It is an amenable number.

141545021 is a deficient number, since it is larger than the sum of its proper divisors (1).

141545021 is an equidigital number, since it uses as much as digits as its factorization.

141545021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 141545021 is about 11897.2694766488. The cubic root of 141545021 is about 521.1525483425.

The spelling of 141545021 in words is "one hundred forty-one million, five hundred forty-five thousand, twenty-one".