42102255 has 16 divisors (see below), whose sum is σ = 72545760. Its totient is φ = 20727168.

The previous prime is 42102199. The next prime is 42102257. The reversal of 42102255 is 55220124.

It is a happy number.

It is not a de Polignac number, because 42102255 - 2⁶ = 42102191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42102257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107760 + ... + 108149.

It is an arithmetic number, because the mean of its divisors is an integer number (4534110).

Almost surely, 2^42102255 is an apocalyptic number.

42102255 is a deficient number, since it is larger than the sum of its proper divisors (30443505).

42102255 is a wasteful number, since it uses less digits than its factorization.

42102255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215930.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 42102255 is about 6488.6250469572. The cubic root of 42102255 is about 347.8845319781.

Adding to 42102255 its reverse (55220124), we get a palindrome (97322379).

The spelling of 42102255 in words is "forty-two million, one hundred two thousand, two hundred fifty-five".