136458457 has 2 divisors, whose sum is σ = 136458458. Its totient is φ = 136458456.

The previous prime is 136458451. The next prime is 136458481. The reversal of 136458457 is 754854631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70913241 + 65545216 = 8421^2 + 8096^2 .

It is a cyclic number.

It is not a de Polignac number, because 136458457 - 2¹¹ = 136456409 is a prime.

It is not a weakly prime, because it can be changed into another prime (136458451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68229228 + 68229229.

It is an arithmetic number, because the mean of its divisors is an integer number (68229229).

Almost surely, 2^136458457 is an apocalyptic number.

It is an amenable number.

136458457 is a deficient number, since it is larger than the sum of its proper divisors (1).

136458457 is an equidigital number, since it uses as much as digits as its factorization.

136458457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 403200, while the sum is 43.

The square root of 136458457 is about 11681.5434339817. The cubic root of 136458457 is about 514.8335239716.

The spelling of 136458457 in words is "one hundred thirty-six million, four hundred fifty-eight thousand, four hundred fifty-seven".