42645135 has 32 divisors (see below), whose sum is σ = 73801728. Its totient is φ = 20903040.

The previous prime is 42645131. The next prime is 42645137. The reversal of 42645135 is 53154624.

It is not a de Polignac number, because 42645135 - 2² = 42645131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42645131) 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, 74400 + ... + 74970.

It is an arithmetic number, because the mean of its divisors is an integer number (2306304).

Almost surely, 2^42645135 is an apocalyptic number.

42645135 is a deficient number, since it is larger than the sum of its proper divisors (31156593).

42645135 is a wasteful number, since it uses less digits than its factorization.

42645135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975.

The product of its digits is 14400, while the sum is 30.

The square root of 42645135 is about 6530.3242645369. The cubic root of 42645135 is about 349.3733958684.

Adding to 42645135 its reverse (53154624), we get a palindrome (95799759).

The spelling of 42645135 in words is "forty-two million, six hundred forty-five thousand, one hundred thirty-five".