434134023021 has 6 divisors (see below), whose sum is σ = 627082477710. Its totient is φ = 289422682008.

The previous prime is 434134022953. The next prime is 434134023049. The reversal of 434134023021 is 120320431434.

It can be written as a sum of positive squares in only one way, i.e., 431451922500 + 2682100521 = 656850^2 + 51789^2 .

It is not a de Polignac number, because 434134023021 - 2²⁷ = 433999805293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434134023091) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24118556826 + ... + 24118556843.

It is an arithmetic number, because the mean of its divisors is an integer number (104513746285).

Almost surely, 2^434134023021 is an apocalyptic number.

It is an amenable number.

434134023021 is a deficient number, since it is larger than the sum of its proper divisors (192948454689).

434134023021 is a wasteful number, since it uses less digits than its factorization.

434134023021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48237113675 (or 48237113672 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 434134023021 its reverse (120320431434), we get a palindrome (554454454455).

The spelling of 434134023021 in words is "four hundred thirty-four billion, one hundred thirty-four million, twenty-three thousand, twenty-one".