1290210931128 has 64 divisors (see below), whose sum is σ = 3686537237760. Its totient is φ = 368609665536.

The previous prime is 1290210931127. The next prime is 1290210931147. The reversal of 1290210931128 is 8211390120921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1290210931127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2701251 + ... + 3142797.

It is an arithmetic number, because the mean of its divisors is an integer number (57602144340).

Almost surely, 2^{1290210931128} is an apocalyptic number.

It is an amenable number.

1290210931128 is an abundant number, since it is smaller than the sum of its proper divisors (2396326306632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1290210931128 is a wasteful number, since it uses less digits than its factorization.

1290210931128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458956 (or 458952 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 39.

The spelling of 1290210931128 in words is "one trillion, two hundred ninety billion, two hundred ten million, nine hundred thirty-one thousand, one hundred twenty-eight".