122742587489 has 4 divisors (see below), whose sum is σ = 122876149440. Its totient is φ = 122609025540.

The previous prime is 122742587419. The next prime is 122742587503. The reversal of 122742587489 is 984785247221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 122742587489 - 2¹² = 122742583393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122742587419) 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 in 3 ways as a sum of consecutive naturals, for example, 66779597 + ... + 66781434.

It is an arithmetic number, because the mean of its divisors is an integer number (30719037360).

Almost surely, 2^122742587489 is an apocalyptic number.

It is an amenable number.

122742587489 is a deficient number, since it is larger than the sum of its proper divisors (133561951).

122742587489 is an equidigital number, since it uses as much as digits as its factorization.

122742587489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133561950.

The product of its digits is 18063360, while the sum is 59.

The spelling of 122742587489 in words is "one hundred twenty-two billion, seven hundred forty-two million, five hundred eighty-seven thousand, four hundred eighty-nine".