142540441409 has 2 divisors, whose sum is σ = 142540441410. Its totient is φ = 142540441408.

The previous prime is 142540441397. The next prime is 142540441427. The reversal of 142540441409 is 904144045241.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71982207025 + 70558234384 = 268295^2 + 265628^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142540441409 is a prime.

It is not a weakly prime, because it can be changed into another prime (142540441469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71270220704 + 71270220705.

It is an arithmetic number, because the mean of its divisors is an integer number (71270220705).

Almost surely, 2^142540441409 is an apocalyptic number.

It is an amenable number.

142540441409 is a deficient number, since it is larger than the sum of its proper divisors (1).

142540441409 is an equidigital number, since it uses as much as digits as its factorization.

142540441409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 92160, while the sum is 38.

The spelling of 142540441409 in words is "one hundred forty-two billion, five hundred forty million, four hundred forty-one thousand, four hundred nine".