42336921 has 16 divisors (see below), whose sum is σ = 64823040. Its totient is φ = 24307920.

The previous prime is 42336913. The next prime is 42336929. The reversal of 42336921 is 12963324.

It is an interprime number because it is at equal distance from previous prime (42336913) and next prime (42336929).

It is not a de Polignac number, because 42336921 - 2³ = 42336913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42336929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33135 + ... + 34388.

It is an arithmetic number, because the mean of its divisors is an integer number (4051440).

Almost surely, 2^42336921 is an apocalyptic number.

It is an amenable number.

42336921 is a deficient number, since it is larger than the sum of its proper divisors (22486119).

42336921 is a wasteful number, since it uses less digits than its factorization.

42336921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67556.

The product of its digits is 7776, while the sum is 30.

The square root of 42336921 is about 6506.6827954035. The cubic root of 42336921 is about 348.5296713442.

The spelling of 42336921 in words is "forty-two million, three hundred thirty-six thousand, nine hundred twenty-one".