1430121405 has 32 divisors (see below), whose sum is σ = 2369875968. Its totient is φ = 735963200.

The previous prime is 1430121403. The next prime is 1430121421. The reversal of 1430121405 is 5041210341.

It is not a de Polignac number, because 1430121405 - 2¹ = 1430121403 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1430121401) 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, 35770 + ... + 64340.

It is an arithmetic number, because the mean of its divisors is an integer number (74058624).

Almost surely, 2^1430121405 is an apocalyptic number.

1430121405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1430121405 is a deficient number, since it is larger than the sum of its proper divisors (939754563).

1430121405 is a wasteful number, since it uses less digits than its factorization.

1430121405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28697.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1430121405 is about 37816.9460030817. The cubic root of 1430121405 is about 1126.6550533429.

Adding to 1430121405 its reverse (5041210341), we get a palindrome (6471331746).

The spelling of 1430121405 in words is "one billion, four hundred thirty million, one hundred twenty-one thousand, four hundred five".