1421102421 has 32 divisors (see below), whose sum is σ = 2161290240. Its totient is φ = 922536000.

The previous prime is 1421102411. The next prime is 1421102429. The reversal of 1421102421 is 1242011241.

1421102421 is a `hidden beast` number, since 1 + 421 + 1 + 0 + 242 + 1 = 666.

It is not a de Polignac number, because 1421102421 - 2¹⁵ = 1421069653 is a prime.

It is a super-2 number, since 2×1421102421² = 4039064181944122482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1421102394 and 1421102403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421102429) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 162076 + ... + 170618.

It is an arithmetic number, because the mean of its divisors is an integer number (67540320).

Almost surely, 2^1421102421 is an apocalyptic number.

It is an amenable number.

1421102421 is a deficient number, since it is larger than the sum of its proper divisors (740187819).

1421102421 is a wasteful number, since it uses less digits than its factorization.

1421102421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8714 (or 8708 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 1421102421 is about 37697.5121327655. The cubic root of 1421102421 is about 1124.2816605318.

Adding to 1421102421 its reverse (1242011241), we get a palindrome (2663113662).

The spelling of 1421102421 in words is "one billion, four hundred twenty-one million, one hundred two thousand, four hundred twenty-one".