102340457 has 2 divisors, whose sum is σ = 102340458. Its totient is φ = 102340456.

The previous prime is 102340421. The next prime is 102340543. The reversal of 102340457 is 754043201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62663056 + 39677401 = 7916^2 + 6299^2 .

It is a cyclic number.

It is not a de Polignac number, because 102340457 - 2⁸ = 102340201 is a prime.

It is not a weakly prime, because it can be changed into another prime (102340417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51170228 + 51170229.

It is an arithmetic number, because the mean of its divisors is an integer number (51170229).

Almost surely, 2^102340457 is an apocalyptic number.

It is an amenable number.

102340457 is a deficient number, since it is larger than the sum of its proper divisors (1).

102340457 is an equidigital number, since it uses as much as digits as its factorization.

102340457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 102340457 is about 10116.3460300644. The cubic root of 102340457 is about 467.7521409552.

Adding to 102340457 its reverse (754043201), we get a palindrome (856383658).

The spelling of 102340457 in words is "one hundred two million, three hundred forty thousand, four hundred fifty-seven".