67426121 has 4 divisors (see below), whose sum is σ = 77058432. Its totient is φ = 57793812.

The previous prime is 67426109. The next prime is 67426141. The reversal of 67426121 is 12162476.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67426121 - 2¹⁰ = 67425097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67426141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4816145 + ... + 4816158.

It is an arithmetic number, because the mean of its divisors is an integer number (19264608).

Almost surely, 2^67426121 is an apocalyptic number.

It is an amenable number.

67426121 is a deficient number, since it is larger than the sum of its proper divisors (9632311).

67426121 is an equidigital number, since it uses as much as digits as its factorization.

67426121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9632310.

The product of its digits is 4032, while the sum is 29.

The square root of 67426121 is about 8211.3409988868. The cubic root of 67426121 is about 407.0140412544.

Adding to 67426121 its reverse (12162476), we get a palindrome (79588597).

The spelling of 67426121 in words is "sixty-seven million, four hundred twenty-six thousand, one hundred twenty-one".