42205254 has 64 divisors (see below), whose sum is σ = 110025216. Its totient is φ = 10473984.

The previous prime is 42205217. The next prime is 42205279. The reversal of 42205254 is 45250224.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7009 + ... + 11555.

It is an arithmetic number, because the mean of its divisors is an integer number (1719144).

Almost surely, 2^42205254 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42205254, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55012608).

42205254 is an abundant number, since it is smaller than the sum of its proper divisors (67819962).

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

42205254 is a wasteful number, since it uses less digits than its factorization.

42205254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4589.

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 42205254 is about 6496.5570881814. The cubic root of 42205254 is about 348.1679893126.

Adding to 42205254 its reverse (45250224), we get a palindrome (87455478).

The spelling of 42205254 in words is "forty-two million, two hundred five thousand, two hundred fifty-four".