1420052021 has 8 divisors (see below), whose sum is σ = 1437256704. Its totient is φ = 1402909200.

The previous prime is 1420052009. The next prime is 1420052027. The reversal of 1420052021 is 1202500241.

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 1420052021 - 2¹⁴ = 1420035637 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 (1420052027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31580 + ... + 61946.

It is an arithmetic number, because the mean of its divisors is an integer number (179657088).

Almost surely, 2^1420052021 is an apocalyptic number.

It is an amenable number.

1420052021 is a deficient number, since it is larger than the sum of its proper divisors (17204683).

1420052021 is a wasteful number, since it uses less digits than its factorization.

1420052021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30931.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 1420052021 is about 37683.5776035132. The cubic root of 1420052021 is about 1124.0045900637.

Adding to 1420052021 its reverse (1202500241), we get a palindrome (2622552262).

The spelling of 1420052021 in words is "one billion, four hundred twenty million, fifty-two thousand, twenty-one".