1290001404 has 24 divisors (see below), whose sum is σ = 3059349328. Its totient is φ = 422951040.

The previous prime is 1290001399. The next prime is 1290001421. The reversal of 1290001404 is 4041000921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 880417 + ... + 881880.

Almost surely, 2^1290001404 is an apocalyptic number.

It is an amenable number.

1290001404 is an abundant number, since it is smaller than the sum of its proper divisors (1769347924).

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

1290001404 is a wasteful number, since it uses less digits than its factorization.

1290001404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1762365 (or 1762363 counting only the distinct ones).

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

The square root of 1290001404 is about 35916.5895374269. The cubic root of 1290001404 is about 1088.5876283821.

The spelling of 1290001404 in words is "one billion, two hundred ninety million, one thousand, four hundred four".