1214403421 has 16 divisors (see below), whose sum is σ = 1514832768. Its totient is φ = 945806400.

The previous prime is 1214403419. The next prime is 1214403439. The reversal of 1214403421 is 1243044121.

It is a happy number.

It is not a de Polignac number, because 1214403421 - 2¹ = 1214403419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1214403392 and 1214403401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214403401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260491 + ... + 265111.

It is an arithmetic number, because the mean of its divisors is an integer number (94677048).

Almost surely, 2^1214403421 is an apocalyptic number.

1214403421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1214403421 is a deficient number, since it is larger than the sum of its proper divisors (300429347).

1214403421 is a wasteful number, since it uses less digits than its factorization.

1214403421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8052.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1214403421 is about 34848.2915076191. The cubic root of 1214403421 is about 1066.8933151948.

Adding to 1214403421 its reverse (1243044121), we get a palindrome (2457447542).

The spelling of 1214403421 in words is "one billion, two hundred fourteen million, four hundred three thousand, four hundred twenty-one".