1288155129 has 8 divisors (see below), whose sum is σ = 1721526912. Its totient is φ = 856776720.

The previous prime is 1288155109. The next prime is 1288155149. The reversal of 1288155129 is 9215518821.

It is an interprime number because it is at equal distance from previous prime (1288155109) and next prime (1288155149).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1288155129 - 2¹¹ = 1288153081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1288155109) 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, 496834 + ... + 499419.

It is an arithmetic number, because the mean of its divisors is an integer number (215190864).

Almost surely, 2^1288155129 is an apocalyptic number.

It is an amenable number.

1288155129 is a deficient number, since it is larger than the sum of its proper divisors (433371783).

1288155129 is an equidigital number, since it uses as much as digits as its factorization.

1288155129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996687.

The product of its digits is 57600, while the sum is 42.

The square root of 1288155129 is about 35890.8780750764. The cubic root of 1288155129 is about 1088.0680445229.

The spelling of 1288155129 in words is "one billion, two hundred eighty-eight million, one hundred fifty-five thousand, one hundred twenty-nine".