42940863 has 24 divisors (see below), whose sum is σ = 71865248. Its totient is φ = 24198912.

The previous prime is 42940841. The next prime is 42940867. The reversal of 42940863 is 36804924.

42940863 = T₁₂₇ + T₁₂₈ + ... + T₆₃₇.

It is a happy number.

It is not a de Polignac number, because 42940863 - 2¹⁰ = 42939839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42940867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70 + ... + 9267.

Almost surely, 2^42940863 is an apocalyptic number.

42940863 is a deficient number, since it is larger than the sum of its proper divisors (28924385).

42940863 is a wasteful number, since it uses less digits than its factorization.

42940863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9423 (or 9420 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 42940863 is about 6552.9278189219. The cubic root of 42940863 is about 350.1791273560.

The spelling of 42940863 in words is "forty-two million, nine hundred forty thousand, eight hundred sixty-three".