421512067 has 2 divisors, whose sum is σ = 421512068. Its totient is φ = 421512066.

The previous prime is 421512043. The next prime is 421512137. The reversal of 421512067 is 760215124.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421512067 is a prime.

It is a super-2 number, since 2×421512067² = 355344845253224978, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (421512037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210756033 + 210756034.

It is an arithmetic number, because the mean of its divisors is an integer number (210756034).

Almost surely, 2^421512067 is an apocalyptic number.

421512067 is a deficient number, since it is larger than the sum of its proper divisors (1).

421512067 is an equidigital number, since it uses as much as digits as its factorization.

421512067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 421512067 is about 20530.7590458804. The cubic root of 421512067 is about 749.7848668888.

The spelling of 421512067 in words is "four hundred twenty-one million, five hundred twelve thousand, sixty-seven".