1269401121 has 6 divisors (see below), whose sum is σ = 1833579410. Its totient is φ = 846267408.

The previous prime is 1269401093. The next prime is 1269401129. The reversal of 1269401121 is 1211049621.

It can be written as a sum of positive squares in only one way, i.e., 913550625 + 355850496 = 30225^2 + 18864^2 .

It is not a de Polignac number, because 1269401121 - 2¹⁷ = 1269270049 is a prime.

It is a super-2 number, since 2×1269401121² = 3222758411992113282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1269401129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 70522276 + ... + 70522293.

Almost surely, 2^1269401121 is an apocalyptic number.

It is an amenable number.

1269401121 is a deficient number, since it is larger than the sum of its proper divisors (564178289).

1269401121 is a wasteful number, since it uses less digits than its factorization.

1269401121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141044575 (or 141044572 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 1269401121 is about 35628.6558966234. The cubic root of 1269401121 is about 1082.7618842016.

The spelling of 1269401121 in words is "one billion, two hundred sixty-nine million, four hundred one thousand, one hundred twenty-one".