434134023421 has 6 divisors (see below), whose sum is σ = 505013047710. Its totient is φ = 372114877176.

The previous prime is 434134023409. The next prime is 434134023443. The reversal of 434134023421 is 124320431434.

It can be written as a sum of positive squares in only one way, i.e., 434116265625 + 17757796 = 658875^2 + 4214^2 .

It is not a de Polignac number, because 434134023421 - 2⁷ = 434134023293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434134023221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4429938966 + ... + 4429939063.

It is an arithmetic number, because the mean of its divisors is an integer number (84168841285).

Almost surely, 2^434134023421 is an apocalyptic number.

It is an amenable number.

434134023421 is a deficient number, since it is larger than the sum of its proper divisors (70879024289).

434134023421 is an equidigital number, since it uses as much as digits as its factorization.

434134023421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8859878043 (or 8859878036 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 434134023421 its reverse (124320431434), we get a palindrome (558454454855).

The spelling of 434134023421 in words is "four hundred thirty-four billion, one hundred thirty-four million, twenty-three thousand, four hundred twenty-one".