129141377 has 2 divisors, whose sum is σ = 129141378. Its totient is φ = 129141376.

The previous prime is 129141373. The next prime is 129141407. The reversal of 129141377 is 773141921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99121936 + 30019441 = 9956^2 + 5479^2 .

It is an emirp because it is prime and its reverse (773141921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 129141377 - 2² = 129141373 is a prime.

It is a super-2 number, since 2×129141377² = 33354990506912258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (129141371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64570688 + 64570689.

It is an arithmetic number, because the mean of its divisors is an integer number (64570689).

Almost surely, 2^129141377 is an apocalyptic number.

It is an amenable number.

129141377 is a deficient number, since it is larger than the sum of its proper divisors (1).

129141377 is an equidigital number, since it uses as much as digits as its factorization.

129141377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10584, while the sum is 35.

The square root of 129141377 is about 11364.0387626935. The cubic root of 129141377 is about 505.4619528801.

The spelling of 129141377 in words is "one hundred twenty-nine million, one hundred forty-one thousand, three hundred seventy-seven".