42351121 has 8 divisors (see below), whose sum is σ = 42977088. Its totient is φ = 41730000.

The previous prime is 42351109. The next prime is 42351139. The reversal of 42351121 is 12115324.

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 42351121 - 2⁷ = 42350993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42351151) 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, 18711 + ... + 20851.

It is an arithmetic number, because the mean of its divisors is an integer number (5372136).

Almost surely, 2^42351121 is an apocalyptic number.

It is an amenable number.

42351121 is a deficient number, since it is larger than the sum of its proper divisors (625967).

42351121 is a wasteful number, since it uses less digits than its factorization.

42351121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2423.

The product of its digits is 240, while the sum is 19.

The square root of 42351121 is about 6507.7738897414. The cubic root of 42351121 is about 348.5686331455.

Adding to 42351121 its reverse (12115324), we get a palindrome (54466445).

It can be divided in two parts, 4235 and 1121, that added together give a triangular number (5356 = T₁₀₃).

The spelling of 42351121 in words is "forty-two million, three hundred fifty-one thousand, one hundred twenty-one".