1420440410 has 16 divisors (see below), whose sum is σ = 2559249000. Its totient is φ = 567630336.

The previous prime is 1420440409. The next prime is 1420440419. The reversal of 1420440410 is 140440241.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1370554441 + 49885969 = 37021^2 + 7063^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1420440419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57215 + ... + 78194.

Almost surely, 2^1420440410 is an apocalyptic number.

1420440410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1420440410 is a deficient number, since it is larger than the sum of its proper divisors (1138808590).

1420440410 is a wasteful number, since it uses less digits than its factorization.

1420440410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136465.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1420440410 is about 37688.7305437580. The cubic root of 1420440410 is about 1124.1070537338.

Adding to 1420440410 its reverse (140440241), we get a palindrome (1560880651).

The spelling of 1420440410 in words is "one billion, four hundred twenty million, four hundred forty thousand, four hundred ten".