342120445 has 4 divisors (see below), whose sum is σ = 410544540. Its totient is φ = 273696352.

The previous prime is 342120421. The next prime is 342120491. The reversal of 342120445 is 544021243.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 69672409 + 272448036 = 8347^2 + 16506^2 .

It is a cyclic number.

It is not a de Polignac number, because 342120445 - 2²¹ = 340023293 is a prime.

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, 34212040 + ... + 34212049.

It is an arithmetic number, because the mean of its divisors is an integer number (102636135).

Almost surely, 2^342120445 is an apocalyptic number.

It is an amenable number.

342120445 is a deficient number, since it is larger than the sum of its proper divisors (68424095).

342120445 is an equidigital number, since it uses as much as digits as its factorization.

342120445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68424094.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 342120445 is about 18496.4981820884. The cubic root of 342120445 is about 699.4011510971.

Adding to 342120445 its reverse (544021243), we get a palindrome (886141688).

The spelling of 342120445 in words is "three hundred forty-two million, one hundred twenty thousand, four hundred forty-five".