1241987329 has 4 divisors (see below), whose sum is σ = 1354895280. Its totient is φ = 1129079380.

The previous prime is 1241987291. The next prime is 1241987333. The reversal of 1241987329 is 9237891421.

It is a happy number.

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: 9237891421 = 11 ⋅839808311.

It is not a de Polignac number, because 1241987329 - 2²¹ = 1239890177 is a prime.

It is a super-3 number, since 3×1241987329³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1241987359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56453959 + ... + 56453980.

It is an arithmetic number, because the mean of its divisors is an integer number (338723820).

Almost surely, 2^1241987329 is an apocalyptic number.

It is an amenable number.

1241987329 is a deficient number, since it is larger than the sum of its proper divisors (112907951).

1241987329 is a wasteful number, since it uses less digits than its factorization.

1241987329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112907950.

The product of its digits is 217728, while the sum is 46.

The square root of 1241987329 is about 35241.8406017620. The cubic root of 1241987329 is about 1074.9107058334.

The spelling of 1241987329 in words is "one billion, two hundred forty-one million, nine hundred eighty-seven thousand, three hundred twenty-nine".