342621643 has 24 divisors (see below), whose sum is σ = 425584800. Its totient is φ = 270077184.

The previous prime is 342621619. The next prime is 342621649. The reversal of 342621643 is 346126243.

It is not a de Polignac number, because 342621643 - 2⁹ = 342621131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (342621649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 601863 + ... + 602431.

It is an arithmetic number, because the mean of its divisors is an integer number (17732700).

Almost surely, 2^342621643 is an apocalyptic number.

342621643 is a deficient number, since it is larger than the sum of its proper divisors (82963157).

342621643 is a wasteful number, since it uses less digits than its factorization.

342621643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111 (or 1098 counting only the distinct ones).

The product of its digits is 20736, while the sum is 31.

The square root of 342621643 is about 18510.0416801260. The cubic root of 342621643 is about 699.7425195885.

Adding to 342621643 its reverse (346126243), we get a palindrome (688747886).

The spelling of 342621643 in words is "three hundred forty-two million, six hundred twenty-one thousand, six hundred forty-three".