4012442381 has 2 divisors, whose sum is σ = 4012442382. Its totient is φ = 4012442380.

The previous prime is 4012442377. The next prime is 4012442429. The reversal of 4012442381 is 1832442104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3949494025 + 62948356 = 62845^2 + 7934^2 .

It is a cyclic number.

It is not a de Polignac number, because 4012442381 - 2² = 4012442377 is a prime.

It is a super-2 number, since 2×4012442381² = 32199387721689898322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4012342381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2006221190 + 2006221191.

It is an arithmetic number, because the mean of its divisors is an integer number (2006221191).

Almost surely, 2^4012442381 is an apocalyptic number.

It is an amenable number.

4012442381 is a deficient number, since it is larger than the sum of its proper divisors (1).

4012442381 is an equidigital number, since it uses as much as digits as its factorization.

4012442381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 4012442381 is about 63343.8424868590. The cubic root of 4012442381 is about 1589.0452690376.

Adding to 4012442381 its reverse (1832442104), we get a palindrome (5844884485).

The spelling of 4012442381 in words is "four billion, twelve million, four hundred forty-two thousand, three hundred eighty-one".