142817797 has 2 divisors, whose sum is σ = 142817798. Its totient is φ = 142817796.

The previous prime is 142817791. The next prime is 142817809. The reversal of 142817797 is 797718241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138156516 + 4661281 = 11754^2 + 2159^2 .

It is a cyclic number.

It is not a de Polignac number, because 142817797 - 2³ = 142817789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142817791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71408898 + 71408899.

It is an arithmetic number, because the mean of its divisors is an integer number (71408899).

Almost surely, 2^142817797 is an apocalyptic number.

It is an amenable number.

142817797 is a deficient number, since it is larger than the sum of its proper divisors (1).

142817797 is an equidigital number, since it uses as much as digits as its factorization.

142817797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 197568, while the sum is 46.

The square root of 142817797 is about 11950.6400247016. The cubic root of 142817797 is about 522.7099613281.

The spelling of 142817797 in words is "one hundred forty-two million, eight hundred seventeen thousand, seven hundred ninety-seven".