1251043141 has 12 divisors (see below), whose sum is σ = 1330428708. Its totient is φ = 1176154112.

The previous prime is 1251043109. The next prime is 1251043169. The reversal of 1251043141 is 1413401521.

It can be written as a sum of positive squares in 6 ways, for example, as 6241 + 1251036900 = 79^2 + 35370^2 .

It is not a de Polignac number, because 1251043141 - 2⁵ = 1251043109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1251043841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 349935 + ... + 353491.

It is an arithmetic number, because the mean of its divisors is an integer number (110869059).

Almost surely, 2^1251043141 is an apocalyptic number.

It is an amenable number.

1251043141 is a deficient number, since it is larger than the sum of its proper divisors (79385567).

1251043141 is a wasteful number, since it uses less digits than its factorization.

1251043141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4808 (or 4791 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1251043141 is about 35370.0882243740. The cubic root of 1251043141 is about 1077.5169122548.

Adding to 1251043141 its reverse (1413401521), we get a palindrome (2664444662).

The spelling of 1251043141 in words is "one billion, two hundred fifty-one million, forty-three thousand, one hundred forty-one".