42643436 has 24 divisors (see below), whose sum is σ = 81723600. Its totient is φ = 19308800.

The previous prime is 42643421. The next prime is 42643451. The reversal of 42643436 is 63434624.

It is an interprime number because it is at equal distance from previous prime (42643421) and next prime (42643451).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10640 + ... + 14088.

It is an arithmetic number, because the mean of its divisors is an integer number (3405150).

Almost surely, 2^42643436 is an apocalyptic number.

It is an amenable number.

42643436 is a deficient number, since it is larger than the sum of its proper divisors (39080164).

42643436 is a wasteful number, since it uses less digits than its factorization.

42643436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3745 (or 3743 counting only the distinct ones).

The product of its digits is 41472, while the sum is 32.

The square root of 42643436 is about 6530.1941778174. The cubic root of 42643436 is about 349.3687560795.

The spelling of 42643436 in words is "forty-two million, six hundred forty-three thousand, four hundred thirty-six".