1261164 has 12 divisors (see below), whose sum is σ = 2942744. Its totient is φ = 420384.

The previous prime is 1261157. The next prime is 1261171. The reversal of 1261164 is 4611621.

It is an interprime number because it is at equal distance from previous prime (1261157) and next prime (1261171).

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1261164.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52537 + ... + 52560.

2^1261164 is an apocalyptic number.

It is an amenable number.

1261164 is an abundant number, since it is smaller than the sum of its proper divisors (1681580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1261164 is a wasteful number, since it uses less digits than its factorization.

1261164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105104 (or 105102 counting only the distinct ones).

The product of its digits is 288, while the sum is 21.

The square root of 1261164 is about 1123.0155831510. The cubic root of 1261164 is about 108.0414792660.

Adding to 1261164 its reverse (4611621), we get a palindrome (5872785).

The spelling of 1261164 in words is "one million, two hundred sixty-one thousand, one hundred sixty-four".