1290040104 has 64 divisors (see below), whose sum is σ = 3421094400. Its totient is φ = 403974144.

The previous prime is 1290040069. The next prime is 1290040117. The reversal of 1290040104 is 4010400921.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 245052 + ... + 250260.

It is an arithmetic number, because the mean of its divisors is an integer number (53454600).

Almost surely, 2^1290040104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1290040104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1710547200).

1290040104 is an abundant number, since it is smaller than the sum of its proper divisors (2131054296).

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

1290040104 is a wasteful number, since it uses less digits than its factorization.

1290040104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5842 (or 5838 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1290040104 is about 35917.1282816430. The cubic root of 1290040104 is about 1088.5985141377.

The spelling of 1290040104 in words is "one billion, two hundred ninety million, forty thousand, one hundred four".