1249332141 has 4 divisors (see below), whose sum is σ = 1665776192. Its totient is φ = 832888092.

The previous prime is 1249332131. The next prime is 1249332143. The reversal of 1249332141 is 1412339421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1412339421 = 3 ⋅470779807.

It is a de Polignac number, because none of the positive numbers 2^k-1249332141 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1249332099 and 1249332108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1249332143) 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, 208222021 + ... + 208222026.

It is an arithmetic number, because the mean of its divisors is an integer number (416444048).

Almost surely, 2^1249332141 is an apocalyptic number.

It is an amenable number.

1249332141 is a deficient number, since it is larger than the sum of its proper divisors (416444051).

1249332141 is an equidigital number, since it uses as much as digits as its factorization.

1249332141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416444050.

The product of its digits is 5184, while the sum is 30.

The square root of 1249332141 is about 35345.8928448554. The cubic root of 1249332141 is about 1077.0254630255.

The spelling of 1249332141 in words is "one billion, two hundred forty-nine million, three hundred thirty-two thousand, one hundred forty-one".