2520129973 has 2 divisors, whose sum is σ = 2520129974. Its totient is φ = 2520129972.

The previous prime is 2520129967. The next prime is 2520130043. The reversal of 2520129973 is 3799210252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2494303249 + 25826724 = 49943^2 + 5082^2 .

It is a cyclic number.

It is not a de Polignac number, because 2520129973 - 2⁹ = 2520129461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2520129373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260064986 + 1260064987.

It is an arithmetic number, because the mean of its divisors is an integer number (1260064987).

Almost surely, 2^2520129973 is an apocalyptic number.

It is an amenable number.

2520129973 is a deficient number, since it is larger than the sum of its proper divisors (1).

2520129973 is an equidigital number, since it uses as much as digits as its factorization.

2520129973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 2520129973 is about 50200.8961374197. The cubic root of 2520129973 is about 1360.8418182452.

The spelling of 2520129973 in words is "two billion, five hundred twenty million, one hundred twenty-nine thousand, nine hundred seventy-three".