1302120403 has 2 divisors, whose sum is σ = 1302120404. Its totient is φ = 1302120402.

The previous prime is 1302120397. The next prime is 1302120427. The reversal of 1302120403 is 3040212031.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1302120403 - 2²¹ = 1300023251 is a prime.

It is not a weakly prime, because it can be changed into another prime (1302120433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651060201 + 651060202.

It is an arithmetic number, because the mean of its divisors is an integer number (651060202).

Almost surely, 2^1302120403 is an apocalyptic number.

1302120403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1302120403 is an equidigital number, since it uses as much as digits as its factorization.

1302120403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1302120403 is about 36084.9054730645. The cubic root of 1302120403 is about 1091.9859434898.

Adding to 1302120403 its reverse (3040212031), we get a palindrome (4342332434).

The spelling of 1302120403 in words is "one billion, three hundred two million, one hundred twenty thousand, four hundred three".