1256042334 has 8 divisors (see below), whose sum is σ = 2512084680. Its totient is φ = 418680776.

The previous prime is 1256042323. The next prime is 1256042357. The reversal of 1256042334 is 4332406521.

It is a sphenic number, since it is the product of 3 distinct primes.

1256042334 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104670189 + ... + 104670200.

It is an arithmetic number, because the mean of its divisors is an integer number (314010585).

Almost surely, 2^1256042334 is an apocalyptic number.

1256042334 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1256042334 is a wasteful number, since it uses less digits than its factorization.

1256042334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209340394.

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 1256042334 is about 35440.6875497640. The cubic root of 1256042334 is about 1078.9502643047.

Adding to 1256042334 its reverse (4332406521), we get a palindrome (5588448855).

The spelling of 1256042334 in words is "one billion, two hundred fifty-six million, forty-two thousand, three hundred thirty-four".