142538441 has 2 divisors, whose sum is σ = 142538442. Its totient is φ = 142538440.

The previous prime is 142538419. The next prime is 142538477. The reversal of 142538441 is 144835241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134676025 + 7862416 = 11605^2 + 2804^2 .

It is a cyclic number.

It is not a de Polignac number, because 142538441 - 2¹⁴ = 142522057 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 142538398 and 142538407.

It is not a weakly prime, because it can be changed into another prime (142538491) 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, 71269220 + 71269221.

It is an arithmetic number, because the mean of its divisors is an integer number (71269221).

Almost surely, 2^142538441 is an apocalyptic number.

It is an amenable number.

142538441 is a deficient number, since it is larger than the sum of its proper divisors (1).

142538441 is an equidigital number, since it uses as much as digits as its factorization.

142538441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15360, while the sum is 32.

The square root of 142538441 is about 11938.9463940500. The cubic root of 142538441 is about 522.3689266238.

The spelling of 142538441 in words is "one hundred forty-two million, five hundred thirty-eight thousand, four hundred forty-one".