42099413 has 2 divisors, whose sum is σ = 42099414. Its totient is φ = 42099412.

The previous prime is 42099389. The next prime is 42099433. The reversal of 42099413 is 31499024.

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., 23107249 + 18992164 = 4807^2 + 4358^2 .

It is a cyclic number.

It is not a de Polignac number, because 42099413 - 2⁶ = 42099349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42099413.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42099433) 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, 21049706 + 21049707.

It is an arithmetic number, because the mean of its divisors is an integer number (21049707).

Almost surely, 2^42099413 is an apocalyptic number.

It is an amenable number.

42099413 is a deficient number, since it is larger than the sum of its proper divisors (1).

42099413 is an equidigital number, since it uses as much as digits as its factorization.

42099413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 42099413 is about 6488.4060446307. The cubic root of 42099413 is about 347.8767041307.

The spelling of 42099413 in words is "forty-two million, ninety-nine thousand, four hundred thirteen".