123169742 has 8 divisors (see below), whose sum is σ = 194478600. Its totient is φ = 58343544.

The previous prime is 123169729. The next prime is 123169747. The reversal of 123169742 is 247961321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123169747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1620617 + ... + 1620692.

It is an arithmetic number, because the mean of its divisors is an integer number (24309825).

Almost surely, 2^123169742 is an apocalyptic number.

123169742 is a deficient number, since it is larger than the sum of its proper divisors (71308858).

123169742 is a wasteful number, since it uses less digits than its factorization.

123169742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3241330.

The product of its digits is 18144, while the sum is 35.

The square root of 123169742 is about 11098.1864284215. The cubic root of 123169742 is about 497.5476476001.

The spelling of 123169742 in words is "one hundred twenty-three million, one hundred sixty-nine thousand, seven hundred forty-two".