1301420021 has 16 divisors (see below), whose sum is σ = 1473043968. Its totient is φ = 1139073600.

The previous prime is 1301419969. The next prime is 1301420041. The reversal of 1301420021 is 1200241031.

It is a cyclic number.

It is not a de Polignac number, because 1301420021 - 2¹⁴ = 1301403637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1301419978 and 1301420005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1301420041) 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 15 ways as a sum of consecutive naturals, for example, 57491 + ... + 76863.

It is an arithmetic number, because the mean of its divisors is an integer number (92065248).

Almost surely, 2^1301420021 is an apocalyptic number.

1301420021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1301420021 is a deficient number, since it is larger than the sum of its proper divisors (171623947).

1301420021 is a wasteful number, since it uses less digits than its factorization.

1301420021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19612.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1301420021 is about 36075.1995282077. The cubic root of 1301420021 is about 1091.7901232818.

Adding to 1301420021 its reverse (1200241031), we get a palindrome (2501661052).

The spelling of 1301420021 in words is "one billion, three hundred one million, four hundred twenty thousand, twenty-one".