42040026 has 32 divisors (see below), whose sum is σ = 106769280. Its totient is φ = 12011328.

The previous prime is 42040007. The next prime is 42040051. The reversal of 42040026 is 62004024.

42040026 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 42039990 and 42040008.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55231 + ... + 55986.

It is an arithmetic number, because the mean of its divisors is an integer number (3336540).

Almost surely, 2^42040026 is an apocalyptic number.

42040026 is an abundant number, since it is smaller than the sum of its proper divisors (64729254).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42040026 is a wasteful number, since it uses less digits than its factorization.

42040026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111235 (or 111229 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 42040026 is about 6483.8280359676. The cubic root of 42040026 is about 347.7130512096.

The spelling of 42040026 in words is "forty-two million, forty thousand, twenty-six".