42321125 has 32 divisors (see below), whose sum is σ = 65864448. Its totient is φ = 26376000.

The previous prime is 42321101. The next prime is 42321133. The reversal of 42321125 is 52112324.

It is not a de Polignac number, because 42321125 - 2¹⁶ = 42255589 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42321097 and 42321106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7427 + ... + 11823.

It is an arithmetic number, because the mean of its divisors is an integer number (2058264).

Almost surely, 2^42321125 is an apocalyptic number.

It is an amenable number.

42321125 is a deficient number, since it is larger than the sum of its proper divisors (23543323).

42321125 is a wasteful number, since it uses less digits than its factorization.

42321125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4430 (or 4420 counting only the distinct ones).

The product of its digits is 480, while the sum is 20.

The square root of 42321125 is about 6505.4688532034. The cubic root of 42321125 is about 348.4863202187.

Adding to 42321125 its reverse (52112324), we get a palindrome (94433449).

The spelling of 42321125 in words is "forty-two million, three hundred twenty-one thousand, one hundred twenty-five".