123667642 has 16 divisors (see below), whose sum is σ = 221219712. Its totient is φ = 50695920.

The previous prime is 123667633. The next prime is 123667651. The reversal of 123667642 is 246766321.

It is an interprime number because it is at equal distance from previous prime (123667633) and next prime (123667651).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191709 + ... + 192352.

It is an arithmetic number, because the mean of its divisors is an integer number (13826232).

Almost surely, 2^123667642 is an apocalyptic number.

123667642 is a deficient number, since it is larger than the sum of its proper divisors (97552070).

123667642 is a wasteful number, since it uses less digits than its factorization.

123667642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384093.

The product of its digits is 72576, while the sum is 37.

The square root of 123667642 is about 11120.5953977294. The cubic root of 123667642 is about 498.2171732800.

The spelling of 123667642 in words is "one hundred twenty-three million, six hundred sixty-seven thousand, six hundred forty-two".