1203302421 has 6 divisors (see below), whose sum is σ = 1738103510. Its totient is φ = 802201608.

The previous prime is 1203302393. The next prime is 1203302447. The reversal of 1203302421 is 1242033021.

It can be written as a sum of positive squares in only one way, i.e., 751527396 + 451775025 = 27414^2 + 21255^2 .

It is not a de Polignac number, because 1203302421 - 2⁵ = 1203302389 is a prime.

It is a super-2 number, since 2×1203302421² = 2895873432768922482, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1203302394 and 1203302403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203302461) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 66850126 + ... + 66850143.

Almost surely, 2^1203302421 is an apocalyptic number.

It is an amenable number.

1203302421 is a deficient number, since it is larger than the sum of its proper divisors (534801089).

1203302421 is a wasteful number, since it uses less digits than its factorization.

1203302421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133700275 (or 133700272 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1203302421 is about 34688.6497431076. The cubic root of 1203302421 is about 1063.6324946346.

Adding to 1203302421 its reverse (1242033021), we get a palindrome (2445335442).

The spelling of 1203302421 in words is "one billion, two hundred three million, three hundred two thousand, four hundred twenty-one".