1421210141 has 8 divisors (see below), whose sum is σ = 1530872280. Its totient is φ = 1311596352.

The previous prime is 1421210093. The next prime is 1421210173. The reversal of 1421210141 is 1410121241.

It can be written as a sum of positive squares in 4 ways, for example, as 232684516 + 1188525625 = 15254^2 + 34475^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1421210141 - 2¹⁴ = 1421193757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421216141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69311 + ... + 87443.

It is an arithmetic number, because the mean of its divisors is an integer number (191359035).

Almost surely, 2^1421210141 is an apocalyptic number.

It is an amenable number.

1421210141 is a deficient number, since it is larger than the sum of its proper divisors (109662139).

1421210141 is a wasteful number, since it uses less digits than its factorization.

1421210141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24175.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 1421210141 is about 37698.9408471909. The cubic root of 1421210141 is about 1124.3100667791.

Adding to 1421210141 its reverse (1410121241), we get a palindrome (2831331382).

Subtracting from 1421210141 its reverse (1410121241), we obtain a square (11088900 = 3330²).

The spelling of 1421210141 in words is "one billion, four hundred twenty-one million, two hundred ten thousand, one hundred forty-one".