102140142257 has 2 divisors, whose sum is σ = 102140142258. Its totient is φ = 102140142256.

The previous prime is 102140142253. The next prime is 102140142311. The reversal of 102140142257 is 752241041201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98887607296 + 3252534961 = 314464^2 + 57031^2 .

It is a cyclic number.

It is not a de Polignac number, because 102140142257 - 2² = 102140142253 is a prime.

It is not a weakly prime, because it can be changed into another prime (102140142253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51070071128 + 51070071129.

It is an arithmetic number, because the mean of its divisors is an integer number (51070071129).

Almost surely, 2^102140142257 is an apocalyptic number.

It is an amenable number.

102140142257 is a deficient number, since it is larger than the sum of its proper divisors (1).

102140142257 is an equidigital number, since it uses as much as digits as its factorization.

102140142257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4480, while the sum is 29.

Adding to 102140142257 its reverse (752241041201), we get a palindrome (854381183458).

The spelling of 102140142257 in words is "one hundred two billion, one hundred forty million, one hundred forty-two thousand, two hundred fifty-seven".