1302091830421 has 4 divisors (see below), whose sum is σ = 1314983828844. Its totient is φ = 1289199832000.

The previous prime is 1302091830409. The next prime is 1302091830469. The reversal of 1302091830421 is 1240381902031.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1286194151025 + 15897679396 = 1134105^2 + 126086^2 .

It is a cyclic number.

It is not a de Polignac number, because 1302091830421 - 2³¹ = 1299944346773 is a prime.

It is a super-2 number, since 2×1302091830421² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1302091830491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6445999060 + ... + 6445999261.

It is an arithmetic number, because the mean of its divisors is an integer number (328745957211).

Almost surely, 2^{1302091830421} is an apocalyptic number.

It is an amenable number.

1302091830421 is a deficient number, since it is larger than the sum of its proper divisors (12891998423).

1302091830421 is a wasteful number, since it uses less digits than its factorization.

1302091830421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12891998422.

The product of its (nonzero) digits is 10368, while the sum is 34.

The spelling of 1302091830421 in words is "one trillion, three hundred two billion, ninety-one million, eight hundred thirty thousand, four hundred twenty-one".