1241252437 has 2 divisors, whose sum is σ = 1241252438. Its totient is φ = 1241252436.

The previous prime is 1241252413. The next prime is 1241252489. The reversal of 1241252437 is 7342521421.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 722050641 + 519201796 = 26871^2 + 22786^2 .

It is an emirp because it is prime and its reverse (7342521421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1241252437 - 2²³ = 1232863829 is a prime.

It is a super-2 number, since 2×1241252437² = 3081415224716877938, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1241252399 and 1241252408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1241252497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620626218 + 620626219.

It is an arithmetic number, because the mean of its divisors is an integer number (620626219).

Almost surely, 2^1241252437 is an apocalyptic number.

It is an amenable number.

1241252437 is a deficient number, since it is larger than the sum of its proper divisors (1).

1241252437 is an equidigital number, since it uses as much as digits as its factorization.

1241252437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 31.

The square root of 1241252437 is about 35231.4126455355. The cubic root of 1241252437 is about 1074.6986534461.

Adding to 1241252437 its reverse (7342521421), we get a palindrome (8583773858).

The spelling of 1241252437 in words is "one billion, two hundred forty-one million, two hundred fifty-two thousand, four hundred thirty-seven".