1302400402 has 16 divisors (see below), whose sum is σ = 1964885400. Its totient is φ = 647447040.

The previous prime is 1302400387. The next prime is 1302400403. The reversal of 1302400402 is 2040042031.

It can be written as a sum of positive squares in 4 ways, for example, as 1264442481 + 37957921 = 35559^2 + 6161^2 .

It is not an unprimeable number, because it can be changed into a prime (1302400403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 423952 + ... + 427012.

Almost surely, 2^1302400402 is an apocalyptic number.

1302400402 is a deficient number, since it is larger than the sum of its proper divisors (662484998).

1302400402 is a wasteful number, since it uses less digits than its factorization.

1302400402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4221.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1302400402 is about 36088.7849892456. The cubic root of 1302400402 is about 1092.0642089247.

Adding to 1302400402 its reverse (2040042031), we get a palindrome (3342442433).

The spelling of 1302400402 in words is "one billion, three hundred two million, four hundred thousand, four hundred two".