42040254 has 8 divisors (see below), whose sum is σ = 84080520. Its totient is φ = 14013416.

The previous prime is 42040253. The next prime is 42040259. The reversal of 42040254 is 45204024.

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

42040254 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 42040254.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42040253) 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, 3503349 + ... + 3503360.

It is an arithmetic number, because the mean of its divisors is an integer number (10510065).

Almost surely, 2^42040254 is an apocalyptic number.

42040254 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

42040254 is a wasteful number, since it uses less digits than its factorization.

42040254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7006714.

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 42040254 is about 6483.8456181498. The cubic root of 42040254 is about 347.7136798045.

Adding to 42040254 its reverse (45204024), we get a palindrome (87244278).

The spelling of 42040254 in words is "forty-two million, forty thousand, two hundred fifty-four".