42999049 has 4 divisors (see below), whose sum is σ = 43222036. Its totient is φ = 42776064.

The previous prime is 42999043. The next prime is 42999113. The reversal of 42999049 is 94099924.

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 31843449 + 11155600 = 5643^2 + 3340^2 .

It is a cyclic number.

It is not a de Polignac number, because 42999049 - 2³ = 42999041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42999041) 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, 111204 + ... + 111589.

It is an arithmetic number, because the mean of its divisors is an integer number (10805509).

Almost surely, 2^42999049 is an apocalyptic number.

It is an amenable number.

42999049 is a deficient number, since it is larger than the sum of its proper divisors (222987).

42999049 is a wasteful number, since it uses less digits than its factorization.

42999049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222986.

The product of its (nonzero) digits is 209952, while the sum is 46.

The square root of 42999049 is about 6557.3660108309. The cubic root of 42999049 is about 350.3372232820.

The spelling of 42999049 in words is "forty-two million, nine hundred ninety-nine thousand, forty-nine".