67124421 has 48 divisors (see below), whose sum is σ = 122304000. Its totient is φ = 34525440.

The previous prime is 67124411. The next prime is 67124429. The reversal of 67124421 is 12442176.

It is not a de Polignac number, because 67124421 - 2⁵ = 67124389 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67124429) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32580 + ... + 34578.

It is an arithmetic number, because the mean of its divisors is an integer number (2548000).

Almost surely, 2^67124421 is an apocalyptic number.

It is an amenable number.

67124421 is a deficient number, since it is larger than the sum of its proper divisors (55179579).

67124421 is a wasteful number, since it uses less digits than its factorization.

67124421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2066 (or 2063 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 67124421 is about 8192.9494689031. The cubic root of 67124421 is about 406.4060684460.

Adding to 67124421 its reverse (12442176), we get a palindrome (79566597).

The spelling of 67124421 in words is "sixty-seven million, one hundred twenty-four thousand, four hundred twenty-one".