42089121 has 24 divisors (see below), whose sum is σ = 63423360. Its totient is φ = 26863200.

The previous prime is 42089119. The next prime is 42089167. The reversal of 42089121 is 12198024.

It is not a de Polignac number, because 42089121 - 2¹ = 42089119 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42089101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33576 + ... + 34806.

It is an arithmetic number, because the mean of its divisors is an integer number (2642640).

Almost surely, 2^42089121 is an apocalyptic number.

It is an amenable number.

42089121 is a deficient number, since it is larger than the sum of its proper divisors (21334239).

42089121 is a wasteful number, since it uses less digits than its factorization.

42089121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397 (or 1394 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 42089121 is about 6487.6128891912. The cubic root of 42089121 is about 347.8483534674.

The spelling of 42089121 in words is "forty-two million, eighty-nine thousand, one hundred twenty-one".