40826129 has 4 divisors (see below), whose sum is σ = 43227684. Its totient is φ = 38424576.

The previous prime is 40826111. The next prime is 40826131. The reversal of 40826129 is 92162804.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33814225 + 7011904 = 5815^2 + 2648^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40826129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40826095 and 40826104.

It is not an unprimeable number, because it can be changed into a prime (40826189) 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, 1200752 + ... + 1200785.

It is an arithmetic number, because the mean of its divisors is an integer number (10806921).

Almost surely, 2^40826129 is an apocalyptic number.

It is an amenable number.

40826129 is a deficient number, since it is larger than the sum of its proper divisors (2401555).

40826129 is a wasteful number, since it uses less digits than its factorization.

40826129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2401554.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 40826129 is about 6389.5327685207. The cubic root of 40826129 is about 344.3335984365. Note that the first 3 decimals are identical.

The spelling of 40826129 in words is "forty million, eight hundred twenty-six thousand, one hundred twenty-nine".