1214140421 has 16 divisors (see below), whose sum is σ = 1341204480. Its totient is φ = 1091959680.

The previous prime is 1214140387. The next prime is 1214140429. The reversal of 1214140421 is 1240414121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1214140421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1214140393 and 1214140402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214140429) 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, 766196 + ... + 767778.

It is an arithmetic number, because the mean of its divisors is an integer number (83825280).

Almost surely, 2^1214140421 is an apocalyptic number.

It is an amenable number.

1214140421 is a deficient number, since it is larger than the sum of its proper divisors (127064059).

1214140421 is a wasteful number, since it uses less digits than its factorization.

1214140421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3076.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 1214140421 is about 34844.5178040965. The cubic root of 1214140421 is about 1066.8162915866.

Adding to 1214140421 its reverse (1240414121), we get a palindrome (2454554542).

The spelling of 1214140421 in words is "one billion, two hundred fourteen million, one hundred forty thousand, four hundred twenty-one".