1256046146 has 16 divisors (see below), whose sum is σ = 1966745664. Its totient is φ = 600485424.

The previous prime is 1256046133. The next prime is 1256046149. The reversal of 1256046146 is 6416406521.

It is not an unprimeable number, because it can be changed into a prime (1256046149) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 205040 + ... + 211076.

It is an arithmetic number, because the mean of its divisors is an integer number (122921604).

Almost surely, 2^1256046146 is an apocalyptic number.

1256046146 is a deficient number, since it is larger than the sum of its proper divisors (710699518).

1256046146 is a wasteful number, since it uses less digits than its factorization.

1256046146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10585.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 1256046146 is about 35440.7413297183. The cubic root of 1256046146 is about 1078.9513558162.

The spelling of 1256046146 in words is "one billion, two hundred fifty-six million, forty-six thousand, one hundred forty-six".