1302022402 has 4 divisors (see below), whose sum is σ = 1953033606. Its totient is φ = 651011200.

The previous prime is 1302022343. The next prime is 1302022409. The reversal of 1302022402 is 2042202031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2042202031 = 409 ⋅4993159.

It can be written as a sum of positive squares in only one way, i.e., 900060001 + 401962401 = 30001^2 + 20049^2 .

It is not an unprimeable number, because it can be changed into a prime (1302022409) 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 as a sum of consecutive naturals, namely, 325505599 + ... + 325505602.

Almost surely, 2^1302022402 is an apocalyptic number.

1302022402 is a deficient number, since it is larger than the sum of its proper divisors (651011204).

1302022402 is an equidigital number, since it uses as much as digits as its factorization.

1302022402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651011203.

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

The square root of 1302022402 is about 36083.5475251533. The cubic root of 1302022402 is about 1091.9585475595.

Adding to 1302022402 its reverse (2042202031), we get a palindrome (3344224433).

The spelling of 1302022402 in words is "one billion, three hundred two million, twenty-two thousand, four hundred two".