421454069 has 2 divisors, whose sum is σ = 421454070. Its totient is φ = 421454068.

The previous prime is 421454041. The next prime is 421454147. The reversal of 421454069 is 960454124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 311099044 + 110355025 = 17638^2 + 10505^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421454069 is a prime.

It is a super-2 number, since 2×421454069² = 355247064553313522, which contains 22 as substring.

It is equal to p_22417739 and since 421454069 and 22417739 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421414069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210727034 + 210727035.

It is an arithmetic number, because the mean of its divisors is an integer number (210727035).

Almost surely, 2^421454069 is an apocalyptic number.

It is an amenable number.

421454069 is a deficient number, since it is larger than the sum of its proper divisors (1).

421454069 is an equidigital number, since it uses as much as digits as its factorization.

421454069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 421454069 is about 20529.3465312464. The cubic root of 421454069 is about 749.7504764006.

The spelling of 421454069 in words is "four hundred twenty-one million, four hundred fifty-four thousand, sixty-nine".