1240080437 has 2 divisors, whose sum is σ = 1240080438. Its totient is φ = 1240080436.

The previous prime is 1240080433. The next prime is 1240080449. The reversal of 1240080437 is 7340800421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1088076196 + 152004241 = 32986^2 + 12329^2 .

It is a cyclic number.

It is not a de Polignac number, because 1240080437 - 2² = 1240080433 is a prime.

It is a super-2 number, since 2×1240080437² = 3075598980460221938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1240080431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620040218 + 620040219.

It is an arithmetic number, because the mean of its divisors is an integer number (620040219).

Almost surely, 2^1240080437 is an apocalyptic number.

It is an amenable number.

1240080437 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240080437 is an equidigital number, since it uses as much as digits as its factorization.

1240080437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 1240080437 is about 35214.7758334481. The cubic root of 1240080437 is about 1074.3603007154.

Adding to 1240080437 its reverse (7340800421), we get a palindrome (8580880858).

The spelling of 1240080437 in words is "one billion, two hundred forty million, eighty thousand, four hundred thirty-seven".