1257214107 has 8 divisors (see below), whose sum is σ = 1774890576. Its totient is φ = 788840192.

The previous prime is 1257214099. The next prime is 1257214121. The reversal of 1257214107 is 7014127521.

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

It is a cyclic number.

It is not a de Polignac number, because 1257214107 - 2³ = 1257214099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1257214307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12325578 + ... + 12325679.

It is an arithmetic number, because the mean of its divisors is an integer number (221861322).

Almost surely, 2^1257214107 is an apocalyptic number.

1257214107 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1257214107 is a deficient number, since it is larger than the sum of its proper divisors (517676469).

1257214107 is a wasteful number, since it uses less digits than its factorization.

1257214107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24651277.

The product of its (nonzero) digits is 3920, while the sum is 30.

The square root of 1257214107 is about 35457.2151613744. The cubic root of 1257214107 is about 1079.2856807694.

The spelling of 1257214107 in words is "one billion, two hundred fifty-seven million, two hundred fourteen thousand, one hundred seven".