940012129 has 6 divisors (see below), whose sum is σ = 1093483554. Its totient is φ = 805724640.

The previous prime is 940012109. The next prime is 940012133. The reversal of 940012129 is 921210049.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 672624225 + 267387904 = 25935^2 + 16352^2 .

It is not a de Polignac number, because 940012129 - 2¹⁵ = 939979361 is a prime.

It is a super-2 number, since 2×940012129² = 1767245605334225282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 940012097 and 940012106.

It is not an unprimeable number, because it can be changed into a prime (940012109) 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, 9591912 + ... + 9592009.

It is an arithmetic number, because the mean of its divisors is an integer number (182247259).

Almost surely, 2^940012129 is an apocalyptic number.

It is an amenable number.

940012129 is a deficient number, since it is larger than the sum of its proper divisors (153471425).

940012129 is a wasteful number, since it uses less digits than its factorization.

940012129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19183935 (or 19183928 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 940012129 is about 30659.6172350537. The cubic root of 940012129 is about 979.5903219598.

The spelling of 940012129 in words is "nine hundred forty million, twelve thousand, one hundred twenty-nine".