142734257 has 2 divisors, whose sum is σ = 142734258. Its totient is φ = 142734256.

The previous prime is 142734233. The next prime is 142734269. The reversal of 142734257 is 752437241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113401201 + 29333056 = 10649^2 + 5416^2 .

It is a cyclic number.

It is not a de Polignac number, because 142734257 - 2¹⁰ = 142733233 is a prime.

It is a super-3 number, since 3×142734257³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is equal to p_8057852 and since 142734257 and 8057852 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (142734217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71367128 + 71367129.

It is an arithmetic number, because the mean of its divisors is an integer number (71367129).

Almost surely, 2^142734257 is an apocalyptic number.

It is an amenable number.

142734257 is a deficient number, since it is larger than the sum of its proper divisors (1).

142734257 is an equidigital number, since it uses as much as digits as its factorization.

142734257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47040, while the sum is 35.

The square root of 142734257 is about 11947.1443031379. The cubic root of 142734257 is about 522.6080232687.

The spelling of 142734257 in words is "one hundred forty-two million, seven hundred thirty-four thousand, two hundred fifty-seven".