1241280929 has 4 divisors (see below), whose sum is σ = 1418606784. Its totient is φ = 1063955076.

The previous prime is 1241280919. The next prime is 1241280941. The reversal of 1241280929 is 9290821421.

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: 9290821421 = 7 ⋅1327260203.

It is a cyclic number.

It is not a de Polignac number, because 1241280929 - 2⁸ = 1241280673 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1241280892 and 1241280901.

It is not an unprimeable number, because it can be changed into a prime (1241280919) 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, 88662917 + ... + 88662930.

It is an arithmetic number, because the mean of its divisors is an integer number (354651696).

Almost surely, 2^1241280929 is an apocalyptic number.

It is an amenable number.

1241280929 is a deficient number, since it is larger than the sum of its proper divisors (177325855).

1241280929 is an equidigital number, since it uses as much as digits as its factorization.

1241280929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177325854.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 1241280929 is about 35231.8169982759. The cubic root of 1241280929 is about 1074.7068763450.

The spelling of 1241280929 in words is "one billion, two hundred forty-one million, two hundred eighty thousand, nine hundred twenty-nine".