1421060421 has 24 divisors (see below), whose sum is σ = 2084831392. Its totient is φ = 860349600.

The previous prime is 1421060387. The next prime is 1421060423. The reversal of 1421060421 is 1240601241.

It is a happy number.

It is not a de Polignac number, because 1421060421 - 2¹⁰ = 1421059397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421060423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 554475 + ... + 557031.

Almost surely, 2^1421060421 is an apocalyptic number.

1421060421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1421060421 is a deficient number, since it is larger than the sum of its proper divisors (663770971).

1421060421 is a wasteful number, since it uses less digits than its factorization.

1421060421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4113 (or 4102 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1421060421 is about 37696.9550627103. The cubic root of 1421060421 is about 1124.2705845544.

Adding to 1421060421 its reverse (1240601241), we get a palindrome (2661661662).

The spelling of 1421060421 in words is "one billion, four hundred twenty-one million, sixty thousand, four hundred twenty-one".