2640126029 has 8 divisors (see below), whose sum is σ = 2654528760. Its totient is φ = 2625750016.

The previous prime is 2640126023. The next prime is 2640126031. The reversal of 2640126029 is 9206210462.

It can be written as a sum of positive squares in 4 ways, for example, as 940900 + 2639185129 = 970^2 + 51373^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2640126029 - 2⁸ = 2640125773 is a prime.

It is a super-3 number, since 3×2640126029³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2640125986 and 2640126004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640126023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210359 + ... + 222555.

It is an arithmetic number, because the mean of its divisors is an integer number (331816095).

Almost surely, 2^2640126029 is an apocalyptic number.

It is an amenable number.

2640126029 is a deficient number, since it is larger than the sum of its proper divisors (14402731).

2640126029 is a wasteful number, since it uses less digits than its factorization.

2640126029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13359.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 2640126029 is about 51382.1567180670. The cubic root of 2640126029 is about 1382.1066384232.

The spelling of 2640126029 in words is "two billion, six hundred forty million, one hundred twenty-six thousand, twenty-nine".