2000129494 has 16 divisors (see below), whose sum is σ = 3274169040. Its totient is φ = 908808160.

The previous prime is 2000129491. The next prime is 2000129497. The reversal of 2000129494 is 4949210002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2000129491) and next prime (2000129497).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2000129491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48372 + ... + 79624.

It is an arithmetic number, because the mean of its divisors is an integer number (204635565).

Almost surely, 2^2000129494 is an apocalyptic number.

2000129494 is a deficient number, since it is larger than the sum of its proper divisors (1274039546).

2000129494 is a wasteful number, since it uses less digits than its factorization.

2000129494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34175.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 2000129494 is about 44722.8073134950. The cubic root of 2000129494 is about 1259.9482413441.

Adding to 2000129494 its reverse (4949210002), we get a palindrome (6949339496).

The spelling of 2000129494 in words is "two billion, one hundred twenty-nine thousand, four hundred ninety-four".