1257157214 has 16 divisors (see below), whose sum is σ = 1940124048. Its totient is φ = 610509312.

The previous prime is 1257157199. The next prime is 1257157241. The reversal of 1257157214 is 4127517521.

It is a congruent 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, 27977 + ... + 57419.

It is an arithmetic number, because the mean of its divisors is an integer number (121257753).

Almost surely, 2^1257157214 is an apocalyptic number.

1257157214 is a deficient number, since it is larger than the sum of its proper divisors (682966834).

1257157214 is a wasteful number, since it uses less digits than its factorization.

1257157214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30059.

The product of its digits is 19600, while the sum is 35.

The square root of 1257157214 is about 35456.4128755293. The cubic root of 1257157214 is about 1079.2694001358.

The spelling of 1257157214 in words is "one billion, two hundred fifty-seven million, one hundred fifty-seven thousand, two hundred fourteen".