1065122421 has 16 divisors (see below), whose sum is σ = 1558232640. Its totient is φ = 641793920.

The previous prime is 1065122407. The next prime is 1065122473. The reversal of 1065122421 is 1242215601.

It is a cyclic number.

It is not a de Polignac number, because 1065122421 - 2¹⁰ = 1065121397 is a prime.

It is a super-2 number, since 2×1065122421² = 2268971543433802482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1065122391 and 1065122400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1065122491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87576 + ... + 98993.

It is an arithmetic number, because the mean of its divisors is an integer number (97389540).

Almost surely, 2^1065122421 is an apocalyptic number.

1065122421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1065122421 is a deficient number, since it is larger than the sum of its proper divisors (493110219).

1065122421 is a wasteful number, since it uses less digits than its factorization.

1065122421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186756.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 1065122421 is about 32636.2133373343. The cubic root of 1065122421 is about 1021.2526008802.

The spelling of 1065122421 in words is "one billion, sixty-five million, one hundred twenty-two thousand, four hundred twenty-one".