442212413 has 2 divisors, whose sum is σ = 442212414. Its totient is φ = 442212412.

The previous prime is 442212391. The next prime is 442212437. The reversal of 442212413 is 314212244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 404291449 + 37920964 = 20107^2 + 6158^2 .

It is a cyclic number.

It is not a de Polignac number, because 442212413 - 2⁸ = 442212157 is a prime.

It is a super-2 number, since 2×442212413² = 391103636422565138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442262413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221106206 + 221106207.

It is an arithmetic number, because the mean of its divisors is an integer number (221106207).

Almost surely, 2^442212413 is an apocalyptic number.

It is an amenable number.

442212413 is a deficient number, since it is larger than the sum of its proper divisors (1).

442212413 is an equidigital number, since it uses as much as digits as its factorization.

442212413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1536, while the sum is 23.

The square root of 442212413 is about 21028.8471628856. The cubic root of 442212413 is about 761.8631646928.

Adding to 442212413 its reverse (314212244), we get a palindrome (756424657).

The spelling of 442212413 in words is "four hundred forty-two million, two hundred twelve thousand, four hundred thirteen".