140102057 has 2 divisors, whose sum is σ = 140102058. Its totient is φ = 140102056.

The previous prime is 140102023. The next prime is 140102059. The reversal of 140102057 is 750201041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80209936 + 59892121 = 8956^2 + 7739^2 .

It is a cyclic number.

It is not a de Polignac number, because 140102057 - 2¹⁰ = 140101033 is a prime.

Together with 140102059, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (140102059) 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, 70051028 + 70051029.

It is an arithmetic number, because the mean of its divisors is an integer number (70051029).

Almost surely, 2^140102057 is an apocalyptic number.

It is an amenable number.

140102057 is a deficient number, since it is larger than the sum of its proper divisors (1).

140102057 is an equidigital number, since it uses as much as digits as its factorization.

140102057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 140102057 is about 11836.4714759087. The cubic root of 140102057 is about 519.3755534359.

Adding to 140102057 its reverse (750201041), we get a palindrome (890303098).

The spelling of 140102057 in words is "one hundred forty million, one hundred two thousand, fifty-seven".