42101225 has 12 divisors (see below), whose sum is σ = 52943040. Its totient is φ = 33205200.

The previous prime is 42101209. The next prime is 42101249. The reversal of 42101225 is 52210124.

It is not a de Polignac number, because 42101225 - 2⁴ = 42101209 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10085 + ... + 13634.

It is an arithmetic number, because the mean of its divisors is an integer number (4411920).

Almost surely, 2^42101225 is an apocalyptic number.

It is an amenable number.

42101225 is a deficient number, since it is larger than the sum of its proper divisors (10841815).

42101225 is a wasteful number, since it uses less digits than its factorization.

42101225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23800 (or 23795 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 42101225 is about 6488.5456768062. The cubic root of 42101225 is about 347.8816950438.

Adding to 42101225 its reverse (52210124), we get a palindrome (94311349).

The spelling of 42101225 in words is "forty-two million, one hundred one thousand, two hundred twenty-five".