1242372732389 has 2 divisors, whose sum is σ = 1242372732390. Its totient is φ = 1242372732388.

The previous prime is 1242372732379. The next prime is 1242372732449. The reversal of 1242372732389 is 9832372732421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 782711784100 + 459660948289 = 884710^2 + 677983^2 .

It is a cyclic number.

It is not a de Polignac number, because 1242372732389 - 2⁴ = 1242372732373 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1242372732389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242372732379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621186366194 + 621186366195.

It is an arithmetic number, because the mean of its divisors is an integer number (621186366195).

Almost surely, 2^{1242372732389} is an apocalyptic number.

It is an amenable number.

1242372732389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242372732389 is an equidigital number, since it uses as much as digits as its factorization.

1242372732389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6096384, while the sum is 53.

The spelling of 1242372732389 in words is "one trillion, two hundred forty-two billion, three hundred seventy-two million, seven hundred thirty-two thousand, three hundred eighty-nine".