1257111214 has 8 divisors (see below), whose sum is σ = 1902354480. Its totient is φ = 622993056.

The previous prime is 1257111199. The next prime is 1257111217. The reversal of 1257111214 is 4121117521.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1257111217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2780994 + ... + 2781445.

It is an arithmetic number, because the mean of its divisors is an integer number (237794310).

Almost surely, 2^1257111214 is an apocalyptic number.

1257111214 is a deficient number, since it is larger than the sum of its proper divisors (645243266).

1257111214 is a wasteful number, since it uses less digits than its factorization.

1257111214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5562554.

The product of its digits is 560, while the sum is 25.

The square root of 1257111214 is about 35455.7641858133. The cubic root of 1257111214 is about 1079.2562363094.

Adding to 1257111214 its reverse (4121117521), we get a palindrome (5378228735).

The spelling of 1257111214 in words is "one billion, two hundred fifty-seven million, one hundred eleven thousand, two hundred fourteen".