234438542258 has 6 divisors (see below), whose sum is σ = 351658840509. Its totient is φ = 117218928756.

The previous prime is 234438542069. The next prime is 234438542263. The reversal of 234438542258 is 852245834432.

It can be written as a sum of positive squares in 2 ways, for example, as 234326669329 + 111872929 = 484073^2 + 10577^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=342373.

It is a super-2 number, since 2×234438542258² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 513560 + ... + 855932.

Almost surely, 2^234438542258 is an apocalyptic number.

234438542258 is a deficient number, since it is larger than the sum of its proper divisors (117220298251).

234438542258 is an frugal number, since it uses more digits than its factorization.

234438542258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684748 (or 342375 counting only the distinct ones).

The product of its digits is 7372800, while the sum is 50.

Multiplying 234438542258 by its sum of digits (50), we get a square (11721927112900 = 3423730²).

The spelling of 234438542258 in words is "two hundred thirty-four billion, four hundred thirty-eight million, five hundred forty-two thousand, two hundred fifty-eight".