102140377 has 2 divisors, whose sum is σ = 102140378. Its totient is φ = 102140376.

The previous prime is 102140347. The next prime is 102140393. The reversal of 102140377 is 773041201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78481881 + 23658496 = 8859^2 + 4864^2 .

It is a cyclic number.

It is not a de Polignac number, because 102140377 - 2⁷ = 102140249 is a prime.

It is a super-2 number, since 2×102140377² = 20865313227404258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (102140317) 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, 51070188 + 51070189.

It is an arithmetic number, because the mean of its divisors is an integer number (51070189).

Almost surely, 2^102140377 is an apocalyptic number.

It is an amenable number.

102140377 is a deficient number, since it is larger than the sum of its proper divisors (1).

102140377 is an equidigital number, since it uses as much as digits as its factorization.

102140377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 102140377 is about 10106.4522459664. The cubic root of 102140377 is about 467.4471168984.

Adding to 102140377 its reverse (773041201), we get a palindrome (875181578).

The spelling of 102140377 in words is "one hundred two million, one hundred forty thousand, three hundred seventy-seven".