142306397 has 2 divisors, whose sum is σ = 142306398. Its totient is φ = 142306396.

The previous prime is 142306379. The next prime is 142306429. The reversal of 142306397 is 793603241.

Together with previous prime (142306379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140683321 + 1623076 = 11861^2 + 1274^2 .

It is a cyclic number.

It is not a de Polignac number, because 142306397 - 2¹⁴ = 142290013 is a prime.

It is a super-2 number, since 2×142306397² = 40502221254243218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142306327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71153198 + 71153199.

It is an arithmetic number, because the mean of its divisors is an integer number (71153199).

Almost surely, 2^142306397 is an apocalyptic number.

It is an amenable number.

142306397 is a deficient number, since it is larger than the sum of its proper divisors (1).

142306397 is an equidigital number, since it uses as much as digits as its factorization.

142306397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 142306397 is about 11929.2244928160. The cubic root of 142306397 is about 522.0853109444.

The spelling of 142306397 in words is "one hundred forty-two million, three hundred six thousand, three hundred ninety-seven".