42123427 has 8 divisors (see below), whose sum is σ = 43431872. Its totient is φ = 40824000.

The previous prime is 42123401. The next prime is 42123449. The reversal of 42123427 is 72432124.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 42123427 - 2⁷ = 42123299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42123727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7927 + ... + 12127.

It is an arithmetic number, because the mean of its divisors is an integer number (5428984).

Almost surely, 2^42123427 is an apocalyptic number.

42123427 is a deficient number, since it is larger than the sum of its proper divisors (1308445).

42123427 is a wasteful number, since it uses less digits than its factorization.

42123427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4509.

The product of its digits is 2688, while the sum is 25.

The square root of 42123427 is about 6490.2563123501. The cubic root of 42123427 is about 347.9428358784.

The spelling of 42123427 in words is "forty-two million, one hundred twenty-three thousand, four hundred twenty-seven".