1241347609 has 4 divisors (see below), whose sum is σ = 1264769316. Its totient is φ = 1217925904.

The previous prime is 1241347603. The next prime is 1241347631. The reversal of 1241347609 is 9067431421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9067431421 = 29 ⋅312670049.

It can be written as a sum of positive squares in 2 ways, for example, as 977187600 + 264160009 = 31260^2 + 16253^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1241347609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1241347603) 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, 11710774 + ... + 11710879.

It is an arithmetic number, because the mean of its divisors is an integer number (316192329).

Almost surely, 2^1241347609 is an apocalyptic number.

It is an amenable number.

1241347609 is a deficient number, since it is larger than the sum of its proper divisors (23421707).

1241347609 is an equidigital number, since it uses as much as digits as its factorization.

1241347609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23421706.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 1241347609 is about 35232.7632893022. The cubic root of 1241347609 is about 1074.7261199531.

The spelling of 1241347609 in words is "one billion, two hundred forty-one million, three hundred forty-seven thousand, six hundred nine".