3126820045 has 8 divisors (see below), whose sum is σ = 3813695640. Its totient is φ = 2460448320.

The previous prime is 3126820027. The next prime is 3126820057. The reversal of 3126820045 is 5400286213.

It can be written as a sum of positive squares in 4 ways, for example, as 29452329 + 3097367716 = 5427^2 + 55654^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-3126820045 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3126819989 and 3126820016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5125630 + ... + 5126239.

It is an arithmetic number, because the mean of its divisors is an integer number (476711955).

Almost surely, 2^3126820045 is an apocalyptic number.

It is an amenable number.

3126820045 is a deficient number, since it is larger than the sum of its proper divisors (686875595).

3126820045 is a wasteful number, since it uses less digits than its factorization.

3126820045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10251935.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 3126820045 is about 55917.9760452755. The cubic root of 3126820045 is about 1462.2926456945.

The spelling of 3126820045 in words is "three billion, one hundred twenty-six million, eight hundred twenty thousand, forty-five".