65424121 has 8 divisors (see below), whose sum is σ = 78021504. Its totient is φ = 53639520.

The previous prime is 65424091. The next prime is 65424173. The reversal of 65424121 is 12142456.

It is a happy number.

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 65424121 - 2¹³ = 65415929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65424221) 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, 203020 + ... + 203341.

It is an arithmetic number, because the mean of its divisors is an integer number (9752688).

Almost surely, 2^65424121 is an apocalyptic number.

It is an amenable number.

65424121 is a deficient number, since it is larger than the sum of its proper divisors (12597383).

65424121 is a wasteful number, since it uses less digits than its factorization.

65424121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406391.

The product of its digits is 1920, while the sum is 25.

The square root of 65424121 is about 8088.5178493961. The cubic root of 65424121 is about 402.9451803100.

Adding to 65424121 its reverse (12142456), we get a palindrome (77566577).

The spelling of 65424121 in words is "sixty-five million, four hundred twenty-four thousand, one hundred twenty-one".