340146405 has 16 divisors (see below), whose sum is σ = 604704960. Its totient is φ = 181411344.

The previous prime is 340146377. The next prime is 340146407. The reversal of 340146405 is 504641043.

340146405 is a `hidden beast` number, since 3 + 4 + 0 + 14 + 640 + 5 = 666.

It is not a de Polignac number, because 340146405 - 2⁷ = 340146277 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340146407) 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 15 ways as a sum of consecutive naturals, for example, 1259667 + ... + 1259936.

It is an arithmetic number, because the mean of its divisors is an integer number (37794060).

Almost surely, 2^340146405 is an apocalyptic number.

It is an amenable number.

340146405 is a deficient number, since it is larger than the sum of its proper divisors (264558555).

340146405 is a wasteful number, since it uses less digits than its factorization.

340146405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2519617 (or 2519611 counting only the distinct ones).

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

The square root of 340146405 is about 18443.0584502679. The cubic root of 340146405 is about 698.0533705493.

Adding to 340146405 its reverse (504641043), we get a palindrome (844787448).

The spelling of 340146405 in words is "three hundred forty million, one hundred forty-six thousand, four hundred five".