1251135214 has 16 divisors (see below), whose sum is σ = 2145729888. Its totient is φ = 535969152.

The previous prime is 1251135187. The next prime is 1251135251. The reversal of 1251135214 is 4125311521.

It is a congruent number.

It is an unprimeable number.

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, 16554 + ... + 52690.

It is an arithmetic number, because the mean of its divisors is an integer number (134108118).

Almost surely, 2^1251135214 is an apocalyptic number.

1251135214 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1251135214 is a deficient number, since it is larger than the sum of its proper divisors (894594674).

1251135214 is a wasteful number, since it uses less digits than its factorization.

1251135214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38619.

The product of its digits is 1200, while the sum is 25.

The square root of 1251135214 is about 35371.3897663069. The cubic root of 1251135214 is about 1077.5433456040.

Adding to 1251135214 its reverse (4125311521), we get a palindrome (5376446735).

The spelling of 1251135214 in words is "one billion, two hundred fifty-one million, one hundred thirty-five thousand, two hundred fourteen".