342453021 has 4 divisors (see below), whose sum is σ = 456604032. Its totient is φ = 228302012.

The previous prime is 342452993. The next prime is 342453029. The reversal of 342453021 is 120354243.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120354243 = 3 ⋅40118081.

It is a cyclic number.

It is not a de Polignac number, because 342453021 - 2¹³ = 342444829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 342452982 and 342453000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342453029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57075501 + ... + 57075506.

It is an arithmetic number, because the mean of its divisors is an integer number (114151008).

Almost surely, 2^342453021 is an apocalyptic number.

It is an amenable number.

342453021 is a deficient number, since it is larger than the sum of its proper divisors (114151011).

342453021 is a wasteful number, since it uses less digits than its factorization.

342453021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114151010.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 342453021 is about 18505.4862405720. The cubic root of 342453021 is about 699.6277074748.

The spelling of 342453021 in words is "three hundred forty-two million, four hundred fifty-three thousand, twenty-one".