1202006421 has 24 divisors (see below), whose sum is σ = 2164653504. Its totient is φ = 624418560.

The previous prime is 1202006411. The next prime is 1202006479. The reversal of 1202006421 is 1246002021.

1202006421 is a `hidden beast` number, since 1 + 2 + 0 + 20 + 0 + 642 + 1 = 666.

It is not a de Polignac number, because 1202006421 - 2¹⁰ = 1202005397 is a prime.

It is a super-3 number, since 3×1202006421³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 1202006394 and 1202006403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202006411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 866556 + ... + 867941.

It is an arithmetic number, because the mean of its divisors is an integer number (90193896).

Almost surely, 2^1202006421 is an apocalyptic number.

1202006421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1202006421 is a deficient number, since it is larger than the sum of its proper divisors (962647083).

1202006421 is a wasteful number, since it uses less digits than its factorization.

1202006421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1734521 (or 1734518 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1202006421 is about 34669.9642486115. The cubic root of 1202006421 is about 1063.2505006399.

Adding to 1202006421 its reverse (1246002021), we get a palindrome (2448008442).

It can be divided in two parts, 120200 and 6421, that added together give a palindrome (126621).

The spelling of 1202006421 in words is "one billion, two hundred two million, six thousand, four hundred twenty-one".