123422707742 has 4 divisors (see below), whose sum is σ = 185134061616. Its totient is φ = 61711353870.

The previous prime is 123422707741. The next prime is 123422707757. The reversal of 123422707742 is 247707224321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 247707224321 = 8081 ⋅30653041.

It is a self number, because there is not a number n which added to its sum of digits gives 123422707742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123422707741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30855676934 + ... + 30855676937.

It is an arithmetic number, because the mean of its divisors is an integer number (46283515404).

Almost surely, 2^123422707742 is an apocalyptic number.

123422707742 is a deficient number, since it is larger than the sum of its proper divisors (61711353874).

123422707742 is an equidigital number, since it uses as much as digits as its factorization.

123422707742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61711353873.

The product of its (nonzero) digits is 263424, while the sum is 41.

The spelling of 123422707742 in words is "one hundred twenty-three billion, four hundred twenty-two million, seven hundred seven thousand, seven hundred forty-two".