2400021473 has 2 divisors, whose sum is σ = 2400021474. Its totient is φ = 2400021472.

The previous prime is 2400021409. The next prime is 2400021487. The reversal of 2400021473 is 3741200042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2178368929 + 221652544 = 46673^2 + 14888^2 .

It is a cyclic number.

It is not a de Polignac number, because 2400021473 - 2⁶ = 2400021409 is a prime.

It is a super-2 number, since 2×2400021473² = 11520206141722179458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2400021773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1200010736 + 1200010737.

It is an arithmetic number, because the mean of its divisors is an integer number (1200010737).

Almost surely, 2^2400021473 is an apocalyptic number.

It is an amenable number.

2400021473 is a deficient number, since it is larger than the sum of its proper divisors (1).

2400021473 is an equidigital number, since it uses as much as digits as its factorization.

2400021473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 2400021473 is about 48990.0140130619. The cubic root of 2400021473 is about 1338.8698931340.

The spelling of 2400021473 in words is "two billion, four hundred million, twenty-one thousand, four hundred seventy-three".