1240133371 has 2 divisors, whose sum is σ = 1240133372. Its totient is φ = 1240133370.

The previous prime is 1240133369. The next prime is 1240133383. The reversal of 1240133371 is 1733310421.

It is a weak prime.

It is an emirp because it is prime and its reverse (1733310421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1240133371 - 2¹ = 1240133369 is a prime.

Together with 1240133369, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1240133311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620066685 + 620066686.

It is an arithmetic number, because the mean of its divisors is an integer number (620066686).

Almost surely, 2^1240133371 is an apocalyptic number.

1240133371 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240133371 is an equidigital number, since it uses as much as digits as its factorization.

1240133371 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 1240133371 is about 35215.5274133442. The cubic root of 1240133371 is about 1074.3755871913.

Adding to 1240133371 its reverse (1733310421), we get a palindrome (2973443792).

The spelling of 1240133371 in words is "one billion, two hundred forty million, one hundred thirty-three thousand, three hundred seventy-one".