342990049 has 4 divisors (see below), whose sum is σ = 345493764. Its totient is φ = 340486336.

The previous prime is 342990031. The next prime is 342990061. The reversal of 342990049 is 940099243.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 940099243 = 61 ⋅15411463.

It can be written as a sum of positive squares in 2 ways, for example, as 160199649 + 182790400 = 12657^2 + 13520^2 .

It is a cyclic number.

It is not a de Polignac number, because 342990049 - 2²¹ = 340892897 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 342989993 and 342990020.

It is not an unprimeable number, because it can be changed into a prime (342990449) 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, 1251652 + ... + 1251925.

It is an arithmetic number, because the mean of its divisors is an integer number (86373441).

Almost surely, 2^342990049 is an apocalyptic number.

It is an amenable number.

342990049 is a deficient number, since it is larger than the sum of its proper divisors (2503715).

342990049 is a wasteful number, since it uses less digits than its factorization.

342990049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2503714.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 342990049 is about 18519.9905237557. The cubic root of 342990049 is about 699.9932305468.

The spelling of 342990049 in words is "three hundred forty-two million, nine hundred ninety thousand, forty-nine".