42250043 has 4 divisors (see below), whose sum is σ = 46090968. Its totient is φ = 38409120.

The previous prime is 42250031. The next prime is 42250051. The reversal of 42250043 is 34005224.

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

It is a cyclic number.

It is not a de Polignac number, because 42250043 - 2¹⁸ = 41987899 is a prime.

It is a super-2 number, since 2×42250043² = 3570132267003698, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42249997 and 42250024.

It is not an unprimeable number, because it can be changed into a prime (42250073) 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, 1920446 + ... + 1920467.

It is an arithmetic number, because the mean of its divisors is an integer number (11522742).

Almost surely, 2^42250043 is an apocalyptic number.

42250043 is a deficient number, since it is larger than the sum of its proper divisors (3840925).

42250043 is a wasteful number, since it uses less digits than its factorization.

42250043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3840924.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 42250043 is about 6500.0033076915. The cubic root of 42250043 is about 348.2911065520.

Adding to 42250043 its reverse (34005224), we get a palindrome (76255267).

The spelling of 42250043 in words is "forty-two million, two hundred fifty thousand, forty-three".