123240041437 has 2 divisors, whose sum is σ = 123240041438. Its totient is φ = 123240041436.

The previous prime is 123240041423. The next prime is 123240041503. The reversal of 123240041437 is 734140042321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62425522201 + 60814519236 = 249851^2 + 246606^2 .

It is a cyclic number.

It is not a de Polignac number, because 123240041437 - 2¹¹ = 123240039389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123240041399 and 123240041408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123240341437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61620020718 + 61620020719.

It is an arithmetic number, because the mean of its divisors is an integer number (61620020719).

Almost surely, 2^123240041437 is an apocalyptic number.

It is an amenable number.

123240041437 is a deficient number, since it is larger than the sum of its proper divisors (1).

123240041437 is an equidigital number, since it uses as much as digits as its factorization.

123240041437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 31.

Adding to 123240041437 its reverse (734140042321), we get a palindrome (857380083758).

The spelling of 123240041437 in words is "one hundred twenty-three billion, two hundred forty million, forty-one thousand, four hundred thirty-seven".