123854642 has 8 divisors (see below), whose sum is σ = 185841516. Its totient is φ = 61907472.

The previous prime is 123854623. The next prime is 123854657. The reversal of 123854642 is 246458321.

It is a Cunningham number, because it is equal to 11129²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 123854641 + 1 = 11129^2 + 1^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233 + ... + 15740.

Almost surely, 2^123854642 is an apocalyptic number.

123854642 is a deficient number, since it is larger than the sum of its proper divisors (61986874).

123854642 is a wasteful number, since it uses less digits than its factorization.

123854642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19852.

The product of its digits is 46080, while the sum is 35.

The square root of 123854642 is about 11129.0000449277. Note that the first 4 decimals coincide. The cubic root of 123854642 is about 498.4681677727.

The spelling of 123854642 in words is "one hundred twenty-three million, eight hundred fifty-four thousand, six hundred forty-two".