142185164461 has 2 divisors, whose sum is σ = 142185164462. Its totient is φ = 142185164460.

The previous prime is 142185164453. The next prime is 142185164477. The reversal of 142185164461 is 164461581241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105472305225 + 36712859236 = 324765^2 + 191606^2 .

It is a cyclic number.

It is not a de Polignac number, because 142185164461 - 2³ = 142185164453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142185164431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71092582230 + 71092582231.

It is an arithmetic number, because the mean of its divisors is an integer number (71092582231).

Almost surely, 2^142185164461 is an apocalyptic number.

It is an amenable number.

142185164461 is a deficient number, since it is larger than the sum of its proper divisors (1).

142185164461 is an equidigital number, since it uses as much as digits as its factorization.

142185164461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 184320, while the sum is 43.

The spelling of 142185164461 in words is "one hundred forty-two billion, one hundred eighty-five million, one hundred sixty-four thousand, four hundred sixty-one".