1421110420 has 24 divisors (see below), whose sum is σ = 2987556264. Its totient is φ = 567830016.

The previous prime is 1421110417. The next prime is 1421110451. The reversal of 1421110420 is 240111241.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 109077136 + 1312033284 = 10444^2 + 36222^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1421110394 and 1421110403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19177 + ... + 56656.

It is an arithmetic number, because the mean of its divisors is an integer number (124481511).

Almost surely, 2^1421110420 is an apocalyptic number.

1421110420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1421110420 is an abundant number, since it is smaller than the sum of its proper divisors (1566445844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1421110420 is a wasteful number, since it uses less digits than its factorization.

1421110420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76779 (or 76777 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1421110420 is about 37697.6182271506. The cubic root of 1421110420 is about 1124.2837699533.

Adding to 1421110420 its reverse (240111241), we get a palindrome (1661221661).

The spelling of 1421110420 in words is "one billion, four hundred twenty-one million, one hundred ten thousand, four hundred twenty".