42545113 has 16 divisors (see below), whose sum is σ = 47627776. Its totient is φ = 37739520.

The previous prime is 42545089. The next prime is 42545137. The reversal of 42545113 is 31154524.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42545089) and next prime (42545137).

It is a de Polignac number, because none of the positive numbers 2^k-42545113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42545143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77506 + ... + 78052.

It is an arithmetic number, because the mean of its divisors is an integer number (2976736).

Almost surely, 2^42545113 is an apocalyptic number.

It is an amenable number.

42545113 is a deficient number, since it is larger than the sum of its proper divisors (5082663).

42545113 is a wasteful number, since it uses less digits than its factorization.

42545113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784.

The product of its digits is 2400, while the sum is 25.

The square root of 42545113 is about 6522.6614966592. The cubic root of 42545113 is about 349.1000361831.

Adding to 42545113 its reverse (31154524), we get a palindrome (73699637).

The spelling of 42545113 in words is "forty-two million, five hundred forty-five thousand, one hundred thirteen".