142406564693 has 2 divisors, whose sum is σ = 142406564694. Its totient is φ = 142406564692.

The previous prime is 142406564689. The next prime is 142406564749. The reversal of 142406564693 is 396465604241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81388672369 + 61017892324 = 285287^2 + 247018^2 .

It is a cyclic number.

It is not a de Polignac number, because 142406564693 - 2² = 142406564689 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142406564623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71203282346 + 71203282347.

It is an arithmetic number, because the mean of its divisors is an integer number (71203282347).

Almost surely, 2^142406564693 is an apocalyptic number.

It is an amenable number.

142406564693 is a deficient number, since it is larger than the sum of its proper divisors (1).

142406564693 is an equidigital number, since it uses as much as digits as its factorization.

142406564693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3732480, while the sum is 50.

The spelling of 142406564693 in words is "one hundred forty-two billion, four hundred six million, five hundred sixty-four thousand, six hundred ninety-three".