1241402513 has 12 divisors (see below), whose sum is σ = 1348113420. Its totient is φ = 1142608896.

The previous prime is 1241402489. The next prime is 1241402537. The reversal of 1241402513 is 3152041421.

It is an interprime number because it is at equal distance from previous prime (1241402489) and next prime (1241402537).

It can be written as a sum of positive squares in 6 ways, for example, as 358837249 + 882565264 = 18943^2 + 29708^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1241402513 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1241402573) 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, 49253 + ... + 70061.

It is an arithmetic number, because the mean of its divisors is an integer number (112342785).

Almost surely, 2^1241402513 is an apocalyptic number.

1241402513 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1241402513 is a deficient number, since it is larger than the sum of its proper divisors (106710907).

1241402513 is a wasteful number, since it uses less digits than its factorization.

1241402513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21188 (or 21175 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1241402513 is about 35233.5424418267. The cubic root of 1241402513 is about 1074.7419645327.

Adding to 1241402513 its reverse (3152041421), we get a palindrome (4393443934).

The spelling of 1241402513 in words is "one billion, two hundred forty-one million, four hundred two thousand, five hundred thirteen".