1021040422 has 4 divisors (see below), whose sum is σ = 1531560636. Its totient is φ = 510520210.

The previous prime is 1021040399. The next prime is 1021040431. The reversal of 1021040422 is 2240401201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2240401201 = 269 ⋅8328629.

It is a junction number, because it is equal to n+sod(n) for n = 1021040396 and 1021040405.

It is a congruent number.

It is an unprimeable number.

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, 255260104 + ... + 255260107.

It is an arithmetic number, because the mean of its divisors is an integer number (382890159).

Almost surely, 2^1021040422 is an apocalyptic number.

1021040422 is a deficient number, since it is larger than the sum of its proper divisors (510520214).

1021040422 is an equidigital number, since it uses as much as digits as its factorization.

1021040422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510520213.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 1021040422 is about 31953.7231320546. The cubic root of 1021040422 is about 1006.9648522139.

Adding to 1021040422 its reverse (2240401201), we get a palindrome (3261441623).

The spelling of 1021040422 in words is "one billion, twenty-one million, forty thousand, four hundred twenty-two".