1206256144 has 20 divisors (see below), whose sum is σ = 2341935424. Its totient is φ = 601885728.

The previous prime is 1206256127. The next prime is 1206256157. The reversal of 1206256144 is 4416526021.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69612 + ... + 85195.

Almost surely, 2^1206256144 is an apocalyptic number.

It is an amenable number.

1206256144 is a deficient number, since it is larger than the sum of its proper divisors (1135679280).

1206256144 is a wasteful number, since it uses less digits than its factorization.

1206256144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155302 (or 155296 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 1206256144 is about 34731.1984244713. The cubic root of 1206256144 is about 1064.5020761586.

The spelling of 1206256144 in words is "one billion, two hundred six million, two hundred fifty-six thousand, one hundred forty-four".