123151442 has 8 divisors (see below), whose sum is σ = 185500800. Its totient is φ = 61317844.

The previous prime is 123151439. The next prime is 123151471. The reversal of 123151442 is 244151321.

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

It is an unprimeable number.

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, 128342 + ... + 129297.

It is an arithmetic number, because the mean of its divisors is an integer number (23187600).

Almost surely, 2^123151442 is an apocalyptic number.

123151442 is a deficient number, since it is larger than the sum of its proper divisors (62349358).

123151442 is a wasteful number, since it uses less digits than its factorization.

123151442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257880.

The product of its digits is 960, while the sum is 23.

The square root of 123151442 is about 11097.3619387672. The cubic root of 123151442 is about 497.5230052576.

The spelling of 123151442 in words is "one hundred twenty-three million, one hundred fifty-one thousand, four hundred forty-two".