142321525445261 has 2 divisors, whose sum is σ = 142321525445262. Its totient is φ = 142321525445260.

The previous prime is 142321525445149. The next prime is 142321525445377. The reversal of 142321525445261 is 162544525123241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142148152308100 + 173373137161 = 11922590^2 + 416381^2 .

It is a cyclic number.

It is not a de Polignac number, because 142321525445261 - 2⁴⁶ = 71952781267597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142321525447261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71160762722630 + 71160762722631.

It is an arithmetic number, because the mean of its divisors is an integer number (71160762722631).

Almost surely, 2^{142321525445261} is an apocalyptic number.

It is an amenable number.

142321525445261 is a deficient number, since it is larger than the sum of its proper divisors (1).

142321525445261 is an equidigital number, since it uses as much as digits as its factorization.

142321525445261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304000, while the sum is 47.

The spelling of 142321525445261 in words is "one hundred forty-two trillion, three hundred twenty-one billion, five hundred twenty-five million, four hundred forty-five thousand, two hundred sixty-one".