1214040421 has 4 divisors (see below), whose sum is σ = 1324407744. Its totient is φ = 1103673100.

The previous prime is 1214040407. The next prime is 1214040439. The reversal of 1214040421 is 1240404121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1240404121 = 11 ⋅112764011.

It is a cyclic number.

It is not a de Polignac number, because 1214040421 - 2⁵ = 1214040389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214040461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55183645 + ... + 55183666.

It is an arithmetic number, because the mean of its divisors is an integer number (331101936).

Almost surely, 2^1214040421 is an apocalyptic number.

1214040421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1214040421 is a deficient number, since it is larger than the sum of its proper divisors (110367323).

1214040421 is a wasteful number, since it uses less digits than its factorization.

1214040421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110367322.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1214040421 is about 34843.0828285902. The cubic root of 1214040421 is about 1066.7870021249.

Adding to 1214040421 its reverse (1240404121), we get a palindrome (2454444542).

It can be divided in two parts, 1214040 and 421, that added together give a triangular number (1214461 = T₁₅₅₈).

The spelling of 1214040421 in words is "one billion, two hundred fourteen million, forty thousand, four hundred twenty-one".