42123137 has 8 divisors (see below), whose sum is σ = 48279936. Its totient is φ = 36001152.

The previous prime is 42123121. The next prime is 42123149. The reversal of 42123137 is 73132124.

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 42123137 - 2⁴ = 42123121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42123157) 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, 6053 + ... + 10994.

It is an arithmetic number, because the mean of its divisors is an integer number (6034992).

Almost surely, 2^42123137 is an apocalyptic number.

It is an amenable number.

42123137 is a deficient number, since it is larger than the sum of its proper divisors (6156799).

42123137 is a wasteful number, since it uses less digits than its factorization.

42123137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17407.

The product of its digits is 1008, while the sum is 23.

The square root of 42123137 is about 6490.2339711292. The cubic root of 42123137 is about 347.9420374023.

The spelling of 42123137 in words is "forty-two million, one hundred twenty-three thousand, one hundred thirty-seven".