42250045 has 4 divisors (see below), whose sum is σ = 50700060. Its totient is φ = 33800032.

The previous prime is 42250031. The next prime is 42250051. The reversal of 42250045 is 54005224.

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 13111641 + 29138404 = 3621^2 + 5398^2 .

It is a cyclic number.

It is not a de Polignac number, because 42250045 - 2⁷ = 42249917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42249998 and 42250025.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4225000 + ... + 4225009.

It is an arithmetic number, because the mean of its divisors is an integer number (12675015).

Almost surely, 2^42250045 is an apocalyptic number.

It is an amenable number.

42250045 is a deficient number, since it is larger than the sum of its proper divisors (8450015).

42250045 is an equidigital number, since it uses as much as digits as its factorization.

42250045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8450014.

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 42250045 is about 6500.0034615375. The cubic root of 42250045 is about 348.2911120477.

Adding to 42250045 its reverse (54005224), we get a palindrome (96255269).

The spelling of 42250045 in words is "forty-two million, two hundred fifty thousand, forty-five".