1011423421 has 2 divisors, whose sum is σ = 1011423422. Its totient is φ = 1011423420.

The previous prime is 1011423419. The next prime is 1011423431. The reversal of 1011423421 is 1243241101.

1011423421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 970322500 + 41100921 = 31150^2 + 6411^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011423421 - 2¹ = 1011423419 is a prime.

Together with 1011423419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011423431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505711710 + 505711711.

It is an arithmetic number, because the mean of its divisors is an integer number (505711711).

Almost surely, 2^1011423421 is an apocalyptic number.

It is an amenable number.

1011423421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011423421 is an equidigital number, since it uses as much as digits as its factorization.

1011423421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1011423421 is about 31802.8838472237. The cubic root of 1011423421 is about 1003.7933989291.

Adding to 1011423421 its reverse (1243241101), we get a palindrome (2254664522).

The spelling of 1011423421 in words is "one billion, eleven million, four hundred twenty-three thousand, four hundred twenty-one".