345666542 has 48 divisors (see below), whose sum is σ = 598797360. Its totient is φ = 148733952.

The previous prime is 345666539. The next prime is 345666547. The reversal of 345666542 is 245666543.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 345666542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345666547) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1344878 + ... + 1345134.

It is an arithmetic number, because the mean of its divisors is an integer number (12474945).

Almost surely, 2^345666542 is an apocalyptic number.

345666542 is a deficient number, since it is larger than the sum of its proper divisors (253130818).

345666542 is a wasteful number, since it uses less digits than its factorization.

345666542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485 (or 468 counting only the distinct ones).

The product of its digits is 518400, while the sum is 41.

The square root of 345666542 is about 18592.1096705027. The cubic root of 345666542 is about 701.8092936299.

Subtracting from 345666542 its reverse (245666543), we obtain a palindrome (99999999).

The spelling of 345666542 in words is "three hundred forty-five million, six hundred sixty-six thousand, five hundred forty-two".