42742099 has 2 divisors, whose sum is σ = 42742100. Its totient is φ = 42742098.

The previous prime is 42742093. The next prime is 42742103. The reversal of 42742099 is 99024724.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42742099 - 2¹¹ = 42740051 is a prime.

It is not a weakly prime, because it can be changed into another prime (42742093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21371049 + 21371050.

It is an arithmetic number, because the mean of its divisors is an integer number (21371050).

Almost surely, 2^42742099 is an apocalyptic number.

42742099 is a deficient number, since it is larger than the sum of its proper divisors (1).

42742099 is an equidigital number, since it uses as much as digits as its factorization.

42742099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 42742099 is about 6537.7441828202. The cubic root of 42742099 is about 349.6379903235.

The spelling of 42742099 in words is "forty-two million, seven hundred forty-two thousand, ninety-nine".