42250093 has 2 divisors, whose sum is σ = 42250094. Its totient is φ = 42250092.

The previous prime is 42250073. The next prime is 42250097. The reversal of 42250093 is 39005224.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28869129 + 13380964 = 5373^2 + 3658^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42250093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42250097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21125046 + 21125047.

It is an arithmetic number, because the mean of its divisors is an integer number (21125047).

Almost surely, 2^42250093 is an apocalyptic number.

It is an amenable number.

42250093 is a deficient number, since it is larger than the sum of its proper divisors (1).

42250093 is an equidigital number, since it uses as much as digits as its factorization.

42250093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 42250093 is about 6500.0071538422. The cubic root of 42250093 is about 348.2912439447.

The spelling of 42250093 in words is "forty-two million, two hundred fifty thousand, ninety-three".