1009261 has 12 divisors (see below), whose sum is σ = 1170400. Its totient is φ = 867240.

The previous prime is 1009259. The next prime is 1009289. The reversal of 1009261 is 1629001.

It is not a de Polignac number, because 1009261 - 2¹ = 1009259 is a prime.

It is a super-2 number, since 2×1009261² = 2037215532242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009201) 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 11 ways as a sum of consecutive naturals, for example, 2080 + ... + 2518.

2^1009261 is an apocalyptic number.

1009261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1009261 is a deficient number, since it is larger than the sum of its proper divisors (161139).

1009261 is a wasteful number, since it uses less digits than its factorization.

1009261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480 (or 469 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 1009261 is about 1004.6198285919. The cubic root of 1009261 is about 100.3077519160.

It can be divided in two parts, 10092 and 61, that added together give a triangular number (10153 = T₁₄₂).

The spelling of 1009261 in words is "one million, nine thousand, two hundred sixty-one".