1269161 has 4 divisors (see below), whose sum is σ = 1271424. Its totient is φ = 1266900.

The previous prime is 1269131. The next prime is 1269167. The reversal of 1269161 is 1619621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1619621 = 29 ⋅55849.

It is a cyclic number.

It is not a de Polignac number, because 1269161 - 2¹⁴ = 1252777 is a prime.

It is a super-2 number, since 2×1269161² = 3221539287842, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 1269161.

It is not an unprimeable number, because it can be changed into a prime (1269167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416 + ... + 1646.

It is an arithmetic number, because the mean of its divisors is an integer number (317856).

2^1269161 is an apocalyptic number.

It is an amenable number.

1269161 is a deficient number, since it is larger than the sum of its proper divisors (2263).

1269161 is a wasteful number, since it uses less digits than its factorization.

1269161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2262.

The product of its digits is 648, while the sum is 26.

The square root of 1269161 is about 1126.5704594032. The cubic root of 1269161 is about 108.2693607842.

The spelling of 1269161 in words is "one million, two hundred sixty-nine thousand, one hundred sixty-one".