42416121 has 16 divisors (see below), whose sum is σ = 62300160. Its totient is φ = 25455120.

The previous prime is 42416119. The next prime is 42416123. The reversal of 42416121 is 12161424.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42416119) and next prime (42416123).

It is not a de Polignac number, because 42416121 - 2¹ = 42416119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42416123) 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, 2841 + ... + 9638.

It is an arithmetic number, because the mean of its divisors is an integer number (3893760).

Almost surely, 2^42416121 is an apocalyptic number.

It is an amenable number.

42416121 is a deficient number, since it is larger than the sum of its proper divisors (19884039).

42416121 is a wasteful number, since it uses less digits than its factorization.

42416121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12596.

The product of its digits is 384, while the sum is 21.

The square root of 42416121 is about 6512.7660022451. The cubic root of 42416121 is about 348.7468683317.

Adding to 42416121 its reverse (12161424), we get a palindrome (54577545).

The spelling of 42416121 in words is "forty-two million, four hundred sixteen thousand, one hundred twenty-one".