1256410104 has 64 divisors (see below), whose sum is σ = 3181127040. Its totient is φ = 413481600.

The previous prime is 1256410097. The next prime is 1256410139. The reversal of 1256410104 is 4010146521.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 1422447 + ... + 1423329.

It is an arithmetic number, because the mean of its divisors is an integer number (49705110).

Almost surely, 2^1256410104 is an apocalyptic number.

It is an amenable number.

1256410104 is an abundant number, since it is smaller than the sum of its proper divisors (1924716936).

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

1256410104 is a wasteful number, since it uses less digits than its factorization.

1256410104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1580 (or 1576 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 1256410104 is about 35445.8756980273. The cubic root of 1256410104 is about 1079.0555598046.

Adding to 1256410104 its reverse (4010146521), we get a palindrome (5266556625).

The spelling of 1256410104 in words is "one billion, two hundred fifty-six million, four hundred ten thousand, one hundred four".