67392121 has 2 divisors, whose sum is σ = 67392122. Its totient is φ = 67392120.

The previous prime is 67392113. The next prime is 67392163. The reversal of 67392121 is 12129376.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60295225 + 7096896 = 7765^2 + 2664^2 .

It is a cyclic number.

It is not a de Polignac number, because 67392121 - 2³ = 67392113 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (67392191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33696060 + 33696061.

It is an arithmetic number, because the mean of its divisors is an integer number (33696061).

Almost surely, 2^67392121 is an apocalyptic number.

It is an amenable number.

67392121 is a deficient number, since it is larger than the sum of its proper divisors (1).

67392121 is an equidigital number, since it uses as much as digits as its factorization.

67392121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 31.

The square root of 67392121 is about 8209.2704304341. The cubic root of 67392121 is about 406.9456167137.

The spelling of 67392121 in words is "sixty-seven million, three hundred ninety-two thousand, one hundred twenty-one".