42250051 has 2 divisors, whose sum is σ = 42250052. Its totient is φ = 42250050.

The previous prime is 42250031. The next prime is 42250067. The reversal of 42250051 is 15005224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42250051 - 2¹⁵ = 42217283 is a prime.

It is not a weakly prime, because it can be changed into another prime (42250031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21125025 + 21125026.

It is an arithmetic number, because the mean of its divisors is an integer number (21125026).

Almost surely, 2^42250051 is an apocalyptic number.

42250051 is a deficient number, since it is larger than the sum of its proper divisors (1).

42250051 is an equidigital number, since it uses as much as digits as its factorization.

42250051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 42250051 is about 6500.0039230757. The cubic root of 42250051 is about 348.2911285348.

Adding to 42250051 its reverse (15005224), we get a palindrome (57255275).

The spelling of 42250051 in words is "forty-two million, two hundred fifty thousand, fifty-one".