42949223 has 2 divisors, whose sum is σ = 42949224. Its totient is φ = 42949222.

The previous prime is 42949199. The next prime is 42949271. The reversal of 42949223 is 32294924.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42949223 - 2⁸ = 42948967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42949723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21474611 + 21474612.

It is an arithmetic number, because the mean of its divisors is an integer number (21474612).

Almost surely, 2^42949223 is an apocalyptic number.

42949223 is a deficient number, since it is larger than the sum of its proper divisors (1).

42949223 is an equidigital number, since it uses as much as digits as its factorization.

42949223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 35.

The square root of 42949223 is about 6553.5656706865. The cubic root of 42949223 is about 350.2018509137.

The spelling of 42949223 in words is "forty-two million, nine hundred forty-nine thousand, two hundred twenty-three".