42101255 has 16 divisors (see below), whose sum is σ = 59602944. Its totient is φ = 27937440.

The previous prime is 42101249. The next prime is 42101261. The reversal of 42101255 is 55210124.

It is an interprime number because it is at equal distance from previous prime (42101249) and next prime (42101261).

It is not a de Polignac number, because 42101255 - 2²⁰ = 41052679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18317 + ... + 20486.

It is an arithmetic number, because the mean of its divisors is an integer number (3725184).

Almost surely, 2^42101255 is an apocalyptic number.

42101255 is a deficient number, since it is larger than the sum of its proper divisors (17501689).

42101255 is a wasteful number, since it uses less digits than its factorization.

42101255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38846.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 42101255 is about 6488.5479885719. The cubic root of 42101255 is about 347.8817776736.

Adding to 42101255 its reverse (55210124), we get a palindrome (97311379).

The spelling of 42101255 in words is "forty-two million, one hundred one thousand, two hundred fifty-five".