42478550 has 12 divisors (see below), whose sum is σ = 79010196. Its totient is φ = 16991400.

The previous prime is 42478549. The next prime is 42478561. The reversal of 42478550 is 5587424.

It is a self number, because there is not a number n which added to its sum of digits gives 42478550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 424736 + ... + 424835.

It is an arithmetic number, because the mean of its divisors is an integer number (6584183).

Almost surely, 2^42478550 is an apocalyptic number.

42478550 is a deficient number, since it is larger than the sum of its proper divisors (36531646).

42478550 is a wasteful number, since it uses less digits than its factorization.

42478550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849583 (or 849578 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 35.

The square root of 42478550 is about 6517.5570576712. The cubic root of 42478550 is about 348.9178822842.

The spelling of 42478550 in words is "forty-two million, four hundred seventy-eight thousand, five hundred fifty".