42123025 has 24 divisors (see below), whose sum is σ = 63210240. Its totient is φ = 27183360.

The previous prime is 42123023. The next prime is 42123041. The reversal of 42123025 is 52032124.

It is not a de Polignac number, because 42123025 - 2¹ = 42123023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42122993 and 42123011.

It is not an unprimeable number, because it can be changed into a prime (42123023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4105 + ... + 10054.

It is an arithmetic number, because the mean of its divisors is an integer number (2633760).

Almost surely, 2^42123025 is an apocalyptic number.

It is an amenable number.

42123025 is a deficient number, since it is larger than the sum of its proper divisors (21087215).

42123025 is a wasteful number, since it uses less digits than its factorization.

42123025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14193 (or 14188 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 42123025 is about 6490.2253427751. The cubic root of 42123025 is about 347.9417290243.

Adding to 42123025 its reverse (52032124), we get a palindrome (94155149).

Subtracting 42123025 from its reverse (52032124), we obtain a palindrome (9909099).

The spelling of 42123025 in words is "forty-two million, one hundred twenty-three thousand, twenty-five".