1034421781 has 2 divisors, whose sum is σ = 1034421782. Its totient is φ = 1034421780.

The previous prime is 1034421761. The next prime is 1034421799. The reversal of 1034421781 is 1871244301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 997928100 + 36493681 = 31590^2 + 6041^2 .

It is a cyclic number.

It is not a de Polignac number, because 1034421781 - 2⁷ = 1034421653 is a prime.

It is a super-2 number, since 2×1034421781² = 2140056842014423922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1034421761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 517210890 + 517210891.

It is an arithmetic number, because the mean of its divisors is an integer number (517210891).

Almost surely, 2^1034421781 is an apocalyptic number.

It is an amenable number.

1034421781 is a deficient number, since it is larger than the sum of its proper divisors (1).

1034421781 is an equidigital number, since it uses as much as digits as its factorization.

1034421781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 1034421781 is about 32162.4280955279. The cubic root of 1034421781 is about 1011.3447372362.

The spelling of 1034421781 in words is "one billion, thirty-four million, four hundred twenty-one thousand, seven hundred eighty-one".