42094121 has 4 divisors (see below), whose sum is σ = 42487632. Its totient is φ = 41700612.

The previous prime is 42094103. The next prime is 42094127. The reversal of 42094121 is 12149024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42094121 - 2¹⁰ = 42093097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42094127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196595 + ... + 196808.

It is an arithmetic number, because the mean of its divisors is an integer number (10621908).

Almost surely, 2^42094121 is an apocalyptic number.

It is an amenable number.

42094121 is a deficient number, since it is larger than the sum of its proper divisors (393511).

42094121 is a wasteful number, since it uses less digits than its factorization.

42094121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393510.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 42094121 is about 6487.9982274967. The cubic root of 42094121 is about 347.8621272001.

Adding to 42094121 its sum of digits (23), we get a square (42094144 = 6488²).

The spelling of 42094121 in words is "forty-two million, ninety-four thousand, one hundred twenty-one".