1421421131 has 4 divisors (see below), whose sum is σ = 1530761232. Its totient is φ = 1312081032.

The previous prime is 1421421107. The next prime is 1421421163. The reversal of 1421421131 is 1311241241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1421421131 - 2³⁰ = 347679307 is a prime.

It is a super-2 number, since 2×1421421131² = 4040876063306638322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1421421931) 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, 54670031 + ... + 54670056.

It is an arithmetic number, because the mean of its divisors is an integer number (382690308).

Almost surely, 2^1421421131 is an apocalyptic number.

1421421131 is a deficient number, since it is larger than the sum of its proper divisors (109340101).

1421421131 is a wasteful number, since it uses less digits than its factorization.

1421421131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109340100.

The product of its digits is 192, while the sum is 20.

The square root of 1421421131 is about 37701.7390978188. The cubic root of 1421421131 is about 1124.3657016300.

Adding to 1421421131 its reverse (1311241241), we get a palindrome (2732662372).

The spelling of 1421421131 in words is "one billion, four hundred twenty-one million, four hundred twenty-one thousand, one hundred thirty-one".