1040129999 has 2 divisors, whose sum is σ = 1040130000. Its totient is φ = 1040129998.

The previous prime is 1040129983. The next prime is 1040130001. The reversal of 1040129999 is 9999210401.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1040129999 - 2⁴ = 1040129983 is a prime.

Together with 1040130001, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1040122999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 520064999 + 520065000.

It is an arithmetic number, because the mean of its divisors is an integer number (520065000).

Almost surely, 2^1040129999 is an apocalyptic number.

1040129999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1040129999 is an equidigital number, since it uses as much as digits as its factorization.

1040129999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52488, while the sum is 44.

The square root of 1040129999 is about 32251.0464791454. The cubic root of 1040129999 is about 1013.2016167118.

The spelling of 1040129999 in words is "one billion, forty million, one hundred twenty-nine thousand, nine hundred ninety-nine".