1042221031 has 2 divisors, whose sum is σ = 1042221032. Its totient is φ = 1042221030.

The previous prime is 1042221029. The next prime is 1042221043. The reversal of 1042221031 is 1301222401.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1042221031 - 2¹ = 1042221029 is a prime.

It is a super-2 number, since 2×1042221031² = 2172449354917405922, which contains 22 as substring.

Together with 1042221029, it forms a pair of twin primes.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 1042220996 and 1042221014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1042221071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521110515 + 521110516.

It is an arithmetic number, because the mean of its divisors is an integer number (521110516).

Almost surely, 2^1042221031 is an apocalyptic number.

1042221031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042221031 is an equidigital number, since it uses as much as digits as its factorization.

1042221031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1042221031 is about 32283.4482513873. The cubic root of 1042221031 is about 1013.8801276832.

Adding to 1042221031 its reverse (1301222401), we get a palindrome (2343443432).

The spelling of 1042221031 in words is "one billion, forty-two million, two hundred twenty-one thousand, thirty-one".