42412945 has 4 divisors (see below), whose sum is σ = 50895540. Its totient is φ = 33930352.

The previous prime is 42412933. The next prime is 42412949. The reversal of 42412945 is 54921424.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18948609 + 23464336 = 4353^2 + 4844^2 .

It is a cyclic number.

It is not a de Polignac number, because 42412945 - 2⁵ = 42412913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42412949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4241290 + ... + 4241299.

It is an arithmetic number, because the mean of its divisors is an integer number (12723885).

Almost surely, 2^42412945 is an apocalyptic number.

It is an amenable number.

42412945 is a deficient number, since it is larger than the sum of its proper divisors (8482595).

42412945 is an equidigital number, since it uses as much as digits as its factorization.

42412945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8482594.

The product of its digits is 11520, while the sum is 31.

The square root of 42412945 is about 6512.5221688682. The cubic root of 42412945 is about 348.7381637192.

The spelling of 42412945 in words is "forty-two million, four hundred twelve thousand, nine hundred forty-five".