1241301491 has 2 divisors, whose sum is σ = 1241301492. Its totient is φ = 1241301490.

The previous prime is 1241301433. The next prime is 1241301557. The reversal of 1241301491 is 1941031421.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1241301491 - 2²⁶ = 1174192627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1241301491.

It is not a weakly prime, because it can be changed into another prime (1241301431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620650745 + 620650746.

It is an arithmetic number, because the mean of its divisors is an integer number (620650746).

Almost surely, 2^1241301491 is an apocalyptic number.

1241301491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1241301491 is an equidigital number, since it uses as much as digits as its factorization.

1241301491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1241301491 is about 35232.1088071662. The cubic root of 1241301491 is about 1074.7128105377.

The spelling of 1241301491 in words is "one billion, two hundred forty-one million, three hundred one thousand, four hundred ninety-one".