42000026 has 8 divisors (see below), whose sum is σ = 63039060. Its totient is φ = 20987008.

The previous prime is 42000019. The next prime is 42000029. The reversal of 42000026 is 62000024.

It can be written as a sum of positive squares in 2 ways, for example, as 39753025 + 2247001 = 6305^2 + 1499^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42000029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1781 + ... + 9336.

Almost surely, 2^42000026 is an apocalyptic number.

42000026 is a deficient number, since it is larger than the sum of its proper divisors (21039034).

42000026 is a wasteful number, since it uses less digits than its factorization.

42000026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13008.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 42000026 is about 6480.7427043511. The cubic root of 42000026 is about 347.6027362162.

The spelling of 42000026 in words is "forty-two million, twenty-six", and thus it is an aban number and an uban number.