1202421 has 16 divisors (see below), whose sum is σ = 1774080. Its totient is φ = 718320.

The previous prime is 1202387. The next prime is 1202423. The reversal of 1202421 is 1242021.

It is not a de Polignac number, because 1202421 - 2⁷ = 1202293 is a prime.

It is a super-2 number, since 2×1202421² = 2891632522482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1202397 and 1202406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2520 + ... + 2958.

It is an arithmetic number, because the mean of its divisors is an integer number (110880).

2^1202421 is an apocalyptic number.

1202421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1202421 is a deficient number, since it is larger than the sum of its proper divisors (571659).

1202421 is a wasteful number, since it uses less digits than its factorization.

1202421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1202421 is about 1096.5495884820. The cubic root of 1202421 is about 106.3372727014.

Adding to 1202421 its reverse (1242021), we get a palindrome (2444442).

The spelling of 1202421 in words is "one million, two hundred two thousand, four hundred twenty-one".