42299993 has 2 divisors, whose sum is σ = 42299994. Its totient is φ = 42299992.

The previous prime is 42299969. The next prime is 42300001. The reversal of 42299993 is 39999224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39778249 + 2521744 = 6307^2 + 1588^2 .

It is a cyclic number.

It is not a de Polignac number, because 42299993 - 2¹⁴ = 42283609 is a prime.

It is not a weakly prime, because it can be changed into another prime (42299963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21149996 + 21149997.

It is an arithmetic number, because the mean of its divisors is an integer number (21149997).

Almost surely, 2^42299993 is an apocalyptic number.

It is an amenable number.

42299993 is a deficient number, since it is larger than the sum of its proper divisors (1).

42299993 is an equidigital number, since it uses as much as digits as its factorization.

42299993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 314928, while the sum is 47.

The square root of 42299993 is about 6503.8444784604. The cubic root of 42299993 is about 348.4283079063.

The spelling of 42299993 in words is "forty-two million, two hundred ninety-nine thousand, nine hundred ninety-three".