1405421330 has 16 divisors (see below), whose sum is σ = 2531741184. Its totient is φ = 561727920.

The previous prime is 1405421323. The next prime is 1405421333. The reversal of 1405421330 is 331245041.

It is a super-2 number, since 2×1405421330² = 3950418229637937800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1405421296 and 1405421305.

It is not an unprimeable number, because it can be changed into a prime (1405421333) 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, 41522 + ... + 67341.

It is an arithmetic number, because the mean of its divisors is an integer number (158233824).

Almost surely, 2^1405421330 is an apocalyptic number.

1405421330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1405421330 is a deficient number, since it is larger than the sum of its proper divisors (1126319854).

1405421330 is a wasteful number, since it uses less digits than its factorization.

1405421330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110161.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1405421330 is about 37488.9494384679. The cubic root of 1405421330 is about 1120.1310778774.

Adding to 1405421330 its reverse (331245041), we get a palindrome (1736666371).

The spelling of 1405421330 in words is "one billion, four hundred five million, four hundred twenty-one thousand, three hundred thirty".