1302400273 has 2 divisors, whose sum is σ = 1302400274. Its totient is φ = 1302400272.

The previous prime is 1302400271. The next prime is 1302400283. The reversal of 1302400273 is 3720042031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1222691089 + 79709184 = 34967^2 + 8928^2 .

It is an emirp because it is prime and its reverse (3720042031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1302400273 - 2¹ = 1302400271 is a prime.

It is a super-2 number, since 2×1302400273² = 3392492942220949058, which contains 22 as substring.

Together with 1302400271, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1302400271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651200136 + 651200137.

It is an arithmetic number, because the mean of its divisors is an integer number (651200137).

Almost surely, 2^1302400273 is an apocalyptic number.

It is an amenable number.

1302400273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1302400273 is an equidigital number, since it uses as much as digits as its factorization.

1302400273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 1302400273 is about 36088.7832019867. The cubic root of 1302400273 is about 1092.0641728691.

The spelling of 1302400273 in words is "one billion, three hundred two million, four hundred thousand, two hundred seventy-three".