1334020421 has 2 divisors, whose sum is σ = 1334020422. Its totient is φ = 1334020420.

The previous prime is 1334020417. The next prime is 1334020543. The reversal of 1334020421 is 1240204331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1333272196 + 748225 = 36514^2 + 865^2 .

It is a cyclic number.

It is not a de Polignac number, because 1334020421 - 2² = 1334020417 is a prime.

It is a super-2 number, since 2×1334020421² = 3559220967290034482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1334020393 and 1334020402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1334029421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 667010210 + 667010211.

It is an arithmetic number, because the mean of its divisors is an integer number (667010211).

Almost surely, 2^1334020421 is an apocalyptic number.

It is an amenable number.

1334020421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1334020421 is an equidigital number, since it uses as much as digits as its factorization.

1334020421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1334020421 is about 36524.2442906078. The cubic root of 1334020421 is about 1100.8314432898.

Adding to 1334020421 its reverse (1240204331), we get a palindrome (2574224752).

The spelling of 1334020421 in words is "one billion, three hundred thirty-four million, twenty thousand, four hundred twenty-one".