129140419 has 2 divisors, whose sum is σ = 129140420. Its totient is φ = 129140418.

The previous prime is 129140399. The next prime is 129140441. The reversal of 129140419 is 914041921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 129140419 - 2¹⁷ = 129009347 is a prime.

It is a super-2 number, since 2×129140419² = 33354495638991122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (129140719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64570209 + 64570210.

It is an arithmetic number, because the mean of its divisors is an integer number (64570210).

Almost surely, 2^129140419 is an apocalyptic number.

129140419 is a deficient number, since it is larger than the sum of its proper divisors (1).

129140419 is an equidigital number, since it uses as much as digits as its factorization.

129140419 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 129140419 is about 11363.9966121079. The cubic root of 129140419 is about 505.4607029999.

The spelling of 129140419 in words is "one hundred twenty-nine million, one hundred forty thousand, four hundred nineteen".