1288415126 has 4 divisors (see below), whose sum is σ = 1932622692. Its totient is φ = 644207562.

The previous prime is 1288415123. The next prime is 1288415131. The reversal of 1288415126 is 6215148821.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1288415126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1288415123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 322103780 + ... + 322103783.

It is an arithmetic number, because the mean of its divisors is an integer number (483155673).

Almost surely, 2^1288415126 is an apocalyptic number.

1288415126 is a deficient number, since it is larger than the sum of its proper divisors (644207566).

1288415126 is an equidigital number, since it uses as much as digits as its factorization.

1288415126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644207565.

The product of its digits is 30720, while the sum is 38.

The square root of 1288415126 is about 35894.4999407987. The cubic root of 1288415126 is about 1088.1412436251.

The spelling of 1288415126 in words is "one billion, two hundred eighty-eight million, four hundred fifteen thousand, one hundred twenty-six".