42126025 has 24 divisors (see below), whose sum is σ = 54014400. Its totient is φ = 32571840.

The previous prime is 42126013. The next prime is 42126031. The reversal of 42126025 is 52062124.

It is a de Polignac number, because none of the positive numbers 2^k-42126025 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42125987 and 42126005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 160044 + ... + 160306.

It is an arithmetic number, because the mean of its divisors is an integer number (2250600).

Almost surely, 2^42126025 is an apocalyptic number.

It is an amenable number.

42126025 is a deficient number, since it is larger than the sum of its proper divisors (11888375).

42126025 is a wasteful number, since it uses less digits than its factorization.

42126025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465 (or 460 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 42126025 is about 6490.4564554429. The cubic root of 42126025 is about 347.9499889598.

Adding to 42126025 its reverse (52062124), we get a palindrome (94188149).

The spelling of 42126025 in words is "forty-two million, one hundred twenty-six thousand, twenty-five".