145042243901 has 2 divisors, whose sum is σ = 145042243902. Its totient is φ = 145042243900.

The previous prime is 145042243769. The next prime is 145042243919. The reversal of 145042243901 is 109342240541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133491583225 + 11550660676 = 365365^2 + 107474^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145042243901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145042246901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72521121950 + 72521121951.

It is an arithmetic number, because the mean of its divisors is an integer number (72521121951).

Almost surely, 2^145042243901 is an apocalyptic number.

It is an amenable number.

145042243901 is a deficient number, since it is larger than the sum of its proper divisors (1).

145042243901 is an equidigital number, since it uses as much as digits as its factorization.

145042243901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 145042243901 in words is "one hundred forty-five billion, forty-two million, two hundred forty-three thousand, nine hundred one".