42205369 has 2 divisors, whose sum is σ = 42205370. Its totient is φ = 42205368.

The previous prime is 42205337. The next prime is 42205381. The reversal of 42205369 is 96350224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36445369 + 5760000 = 6037^2 + 2400^2 .

It is a cyclic number.

It is not a de Polignac number, because 42205369 - 2⁵ = 42205337 is a prime.

It is a super-2 number, since 2×42205369² = 3562586344852322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42205369.

It is not a weakly prime, because it can be changed into another prime (42205309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21102684 + 21102685.

It is an arithmetic number, because the mean of its divisors is an integer number (21102685).

Almost surely, 2^42205369 is an apocalyptic number.

It is an amenable number.

42205369 is a deficient number, since it is larger than the sum of its proper divisors (1).

42205369 is an equidigital number, since it uses as much as digits as its factorization.

42205369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 42205369 is about 6496.5659390173. The cubic root of 42205369 is about 348.1683055393.

The spelling of 42205369 in words is "forty-two million, two hundred five thousand, three hundred sixty-nine".