42451125 has 32 divisors (see below), whose sum is σ = 74805120. Its totient is φ = 21305600.

The previous prime is 42451117. The next prime is 42451127. The reversal of 42451125 is 52115424.

It is not a de Polignac number, because 42451125 - 2³ = 42451117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42451095 and 42451104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42451127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3046 + ... + 9704.

It is an arithmetic number, because the mean of its divisors is an integer number (2337660).

Almost surely, 2^42451125 is an apocalyptic number.

It is an amenable number.

42451125 is a deficient number, since it is larger than the sum of its proper divisors (32353995).

42451125 is a wasteful number, since it uses less digits than its factorization.

42451125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6694 (or 6684 counting only the distinct ones).

The product of its digits is 1600, while the sum is 24.

The square root of 42451125 is about 6515.4527854939. The cubic root of 42451125 is about 348.8427766683.

Adding to 42451125 its reverse (52115424), we get a palindrome (94566549).

The spelling of 42451125 in words is "forty-two million, four hundred fifty-one thousand, one hundred twenty-five".