42011025 has 24 divisors (see below), whose sum is σ = 79381824. Its totient is φ = 19204800.

The previous prime is 42011017. The next prime is 42011083. The reversal of 42011025 is 52011024.

It is not a de Polignac number, because 42011025 - 2³ = 42011017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 42010995 and 42011013.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39486 + ... + 40535.

It is an arithmetic number, because the mean of its divisors is an integer number (3307576).

Almost surely, 2^42011025 is an apocalyptic number.

It is an amenable number.

42011025 is a deficient number, since it is larger than the sum of its proper divisors (37370799).

42011025 is a wasteful number, since it uses less digits than its factorization.

42011025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80041 (or 80036 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 42011025 is about 6481.5912398114. The cubic root of 42011025 is about 347.6330770608.

Adding to 42011025 its reverse (52011024), we get a palindrome (94022049).

Subtracting 42011025 from its reverse (52011024), we obtain a palindrome (9999999).

The spelling of 42011025 in words is "forty-two million, eleven thousand, twenty-five".