1067043421 has 2 divisors, whose sum is σ = 1067043422. Its totient is φ = 1067043420.

The previous prime is 1067043361. The next prime is 1067043433. The reversal of 1067043421 is 1243407601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1066740921 + 302500 = 32661^2 + 550^2 .

It is an emirp because it is prime and its reverse (1243407601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1067043421 - 2¹⁵ = 1067010653 is a prime.

It is a super-2 number, since 2×1067043421² = 2277163324598766482, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1067043421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1067043221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 533521710 + 533521711.

It is an arithmetic number, because the mean of its divisors is an integer number (533521711).

Almost surely, 2^1067043421 is an apocalyptic number.

It is an amenable number.

1067043421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1067043421 is an equidigital number, since it uses as much as digits as its factorization.

1067043421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 1067043421 is about 32665.6305771066. The cubic root of 1067043421 is about 1021.8661916974.

The spelling of 1067043421 in words is "one billion, sixty-seven million, forty-three thousand, four hundred twenty-one".