345420415 has 4 divisors (see below), whose sum is σ = 414504504. Its totient is φ = 276336328.

The previous prime is 345420401. The next prime is 345420431. The reversal of 345420415 is 514024543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 514024543 = 21839 ⋅23537.

It is a cyclic number.

It is not a de Polignac number, because 345420415 - 2⁷ = 345420287 is a prime.

It is a Duffinian number.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 34542037 + ... + 34542046.

It is an arithmetic number, because the mean of its divisors is an integer number (103626126).

Almost surely, 2^345420415 is an apocalyptic number.

345420415 is a deficient number, since it is larger than the sum of its proper divisors (69084089).

345420415 is an equidigital number, since it uses as much as digits as its factorization.

345420415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69084088.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 345420415 is about 18585.4893667076. The cubic root of 345420415 is about 701.6426829335.

Adding to 345420415 its reverse (514024543), we get a palindrome (859444958).

The spelling of 345420415 in words is "three hundred forty-five million, four hundred twenty thousand, four hundred fifteen".