65426121 has 6 divisors (see below), whose sum is σ = 94504410. Its totient is φ = 43617408.

The previous prime is 65426093. The next prime is 65426129. The reversal of 65426121 is 12162456.

65426121 is a `hidden beast` number, since 6 + 5 + 42 + 612 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 32936121 + 32490000 = 5739^2 + 5700^2 .

It is not a de Polignac number, because 65426121 - 2⁶ = 65426057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65426129) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3634776 + ... + 3634793.

It is an arithmetic number, because the mean of its divisors is an integer number (15750735).

Almost surely, 2^65426121 is an apocalyptic number.

It is an amenable number.

65426121 is a deficient number, since it is larger than the sum of its proper divisors (29078289).

65426121 is a wasteful number, since it uses less digits than its factorization.

65426121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7269575 (or 7269572 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 65426121 is about 8088.6414804960. The cubic root of 65426121 is about 402.9492862479.

Adding to 65426121 its reverse (12162456), we get a palindrome (77588577).

The spelling of 65426121 in words is "sixty-five million, four hundred twenty-six thousand, one hundred twenty-one".