1421304040 has 64 divisors (see below), whose sum is σ = 3646535760. Its totient is φ = 493916160.

The previous prime is 1421304011. The next prime is 1421304061. The reversal of 1421304040 is 404031241.

It can be written as a sum of positive squares in 8 ways, for example, as 497022436 + 924281604 = 22294^2 + 30402^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1421303999 and 1421304017.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71551 + ... + 89230.

Almost surely, 2^1421304040 is an apocalyptic number.

1421304040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1421304040 is an abundant number, since it is smaller than the sum of its proper divisors (2225231720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1421304040 is a wasteful number, since it uses less digits than its factorization.

1421304040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160822 (or 160818 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1421304040 is about 37700.1862064367. The cubic root of 1421304040 is about 1124.3348271958.

Adding to 1421304040 its reverse (404031241), we get a palindrome (1825335281).

The spelling of 1421304040 in words is "one billion, four hundred twenty-one million, three hundred four thousand, forty".