142445457701 has 2 divisors, whose sum is σ = 142445457702. Its totient is φ = 142445457700.

The previous prime is 142445457691. The next prime is 142445457731. The reversal of 142445457701 is 107754544241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101744412676 + 40701045025 = 318974^2 + 201745^2 .

It is an emirp because it is prime and its reverse (107754544241) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142445457701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142445457731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71222728850 + 71222728851.

It is an arithmetic number, because the mean of its divisors is an integer number (71222728851).

Almost surely, 2^142445457701 is an apocalyptic number.

It is an amenable number.

142445457701 is a deficient number, since it is larger than the sum of its proper divisors (1).

142445457701 is an equidigital number, since it uses as much as digits as its factorization.

142445457701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 627200, while the sum is 44.

The spelling of 142445457701 in words is "one hundred forty-two billion, four hundred forty-five million, four hundred fifty-seven thousand, seven hundred one".