345134421 has 6 divisors (see below), whose sum is σ = 498527510. Its totient is φ = 230089608.

The previous prime is 345134399. The next prime is 345134429. The reversal of 345134421 is 124431543.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 275228100 + 69906321 = 16590^2 + 8361^2 .

It is not a de Polignac number, because 345134421 - 2⁹ = 345133909 is a prime.

It is a super-3 number, since 3×345134421³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345134429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19174126 + ... + 19174143.

Almost surely, 2^345134421 is an apocalyptic number.

It is an amenable number.

345134421 is a deficient number, since it is larger than the sum of its proper divisors (153393089).

345134421 is a wasteful number, since it uses less digits than its factorization.

345134421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38348275 (or 38348272 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 345134421 is about 18577.7937602935. The cubic root of 345134421 is about 701.4489856348.

Adding to 345134421 its reverse (124431543), we get a palindrome (469565964).

The spelling of 345134421 in words is "three hundred forty-five million, one hundred thirty-four thousand, four hundred twenty-one".