1257345714 has 16 divisors (see below), whose sum is σ = 2573173152. Its totient is φ = 409368288.

The previous prime is 1257345707. The next prime is 1257345731. The reversal of 1257345714 is 4175437521.

It is a Curzon 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, 2436459 + ... + 2436974.

It is an arithmetic number, because the mean of its divisors is an integer number (160823322).

Almost surely, 2^1257345714 is an apocalyptic number.

1257345714 is an abundant number, since it is smaller than the sum of its proper divisors (1315827438).

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

1257345714 is a wasteful number, since it uses less digits than its factorization.

1257345714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4873481.

The product of its digits is 117600, while the sum is 39.

The square root of 1257345714 is about 35459.0709692175. The cubic root of 1257345714 is about 1079.3233398532.

The spelling of 1257345714 in words is "one billion, two hundred fifty-seven million, three hundred forty-five thousand, seven hundred fourteen".