1240422973 has 2 divisors, whose sum is σ = 1240422974. Its totient is φ = 1240422972.

The previous prime is 1240422949. The next prime is 1240423043. The reversal of 1240422973 is 3792240421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1134477124 + 105945849 = 33682^2 + 10293^2 .

It is an emirp because it is prime and its reverse (3792240421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1240422973 - 2¹⁷ = 1240291901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1240422173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620211486 + 620211487.

It is an arithmetic number, because the mean of its divisors is an integer number (620211487).

Almost surely, 2^1240422973 is an apocalyptic number.

It is an amenable number.

1240422973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240422973 is an equidigital number, since it uses as much as digits as its factorization.

1240422973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 1240422973 is about 35219.6390242717. The cubic root of 1240422973 is about 1074.4592118265.

The spelling of 1240422973 in words is "one billion, two hundred forty million, four hundred twenty-two thousand, nine hundred seventy-three".