1420402105 has 8 divisors (see below), whose sum is σ = 1804746312. Its totient is φ = 1069479168.

The previous prime is 1420402103. The next prime is 1420402117. The reversal of 1420402105 is 5012040241.

It can be written as a sum of positive squares in 4 ways, for example, as 173817856 + 1246584249 = 13184^2 + 35307^2 .

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 1420402105 - 2¹ = 1420402103 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1420402103) 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 7 ways as a sum of consecutive naturals, for example, 8355222 + ... + 8355391.

It is an arithmetic number, because the mean of its divisors is an integer number (225593289).

Almost surely, 2^1420402105 is an apocalyptic number.

It is an amenable number.

1420402105 is a deficient number, since it is larger than the sum of its proper divisors (384344207).

1420402105 is a wasteful number, since it uses less digits than its factorization.

1420402105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16710635.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 1420402105 is about 37688.2223645531. Note that the first 3 decimals coincide. The cubic root of 1420402105 is about 1124.0969490490.

Adding to 1420402105 its reverse (5012040241), we get a palindrome (6432442346).

The spelling of 1420402105 in words is "one billion, four hundred twenty million, four hundred two thousand, one hundred five".