42946849 has 16 divisors (see below), whose sum is σ = 48165120. Its totient is φ = 37964160.

The previous prime is 42946837. The next prime is 42946877. The reversal of 42946849 is 94864924.

It is a cyclic number.

It is not a de Polignac number, because 42946849 - 2⁵ = 42946817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42946799 and 42946808.

It is not an unprimeable number, because it can be changed into a prime (42946249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63099 + ... + 63775.

It is an arithmetic number, because the mean of its divisors is an integer number (3010320).

Almost surely, 2^42946849 is an apocalyptic number.

It is an amenable number.

42946849 is a deficient number, since it is larger than the sum of its proper divisors (5218271).

42946849 is a wasteful number, since it uses less digits than its factorization.

42946849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840.

The product of its digits is 497664, while the sum is 46.

The square root of 42946849 is about 6553.3845454086. The cubic root of 42946849 is about 350.1953983755.

It can be divided in two parts, 429 and 46849, that added together give a triangular number (47278 = T₃₀₇).

The spelling of 42946849 in words is "forty-two million, nine hundred forty-six thousand, eight hundred forty-nine".