1288420334407 has 8 divisors (see below), whose sum is σ = 1344454147296. Its totient is φ = 1232387816352.

The previous prime is 1288420334389. The next prime is 1288420334473. The reversal of 1288420334407 is 7044330248821.

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

It is a cyclic number.

It is not a de Polignac number, because 1288420334407 - 2¹¹ = 1288420332359 is a prime.

It is a super-2 number, since 2×1288420334407² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1288420334477) 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, 2093913 + ... + 2638429.

It is an arithmetic number, because the mean of its divisors is an integer number (168056768412).

Almost surely, 2^{1288420334407} is an apocalyptic number.

1288420334407 is a deficient number, since it is larger than the sum of its proper divisors (56033812889).

1288420334407 is a wasteful number, since it uses less digits than its factorization.

1288420334407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647417.

The product of its (nonzero) digits is 1032192, while the sum is 46.

The spelling of 1288420334407 in words is "one trillion, two hundred eighty-eight billion, four hundred twenty million, three hundred thirty-four thousand, four hundred seven".