1240506937 has 2 divisors, whose sum is σ = 1240506938. Its totient is φ = 1240506936.

The previous prime is 1240506859. The next prime is 1240506977. The reversal of 1240506937 is 7396050421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 836135056 + 404371881 = 28916^2 + 20109^2 .

It is an emirp because it is prime and its reverse (7396050421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1240506937 - 2¹⁹ = 1239982649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1240506896 and 1240506905.

It is not a weakly prime, because it can be changed into another prime (1240506977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620253468 + 620253469.

It is an arithmetic number, because the mean of its divisors is an integer number (620253469).

Almost surely, 2^1240506937 is an apocalyptic number.

It is an amenable number.

1240506937 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240506937 is an equidigital number, since it uses as much as digits as its factorization.

1240506937 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 1240506937 is about 35220.8310095035. The cubic root of 1240506937 is about 1074.4834545941.

The spelling of 1240506937 in words is "one billion, two hundred forty million, five hundred six thousand, nine hundred thirty-seven".