1420173240 has 256 divisors, whose sum is σ = 4711219200. Its totient is φ = 341107200.

The previous prime is 1420173233. The next prime is 1420173253. The reversal of 1420173240 is 423710241.

It is a happy number.

1420173240 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1420173240² = 4033784063224195200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1420173240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5018139 + ... + 5018421.

It is an arithmetic number, because the mean of its divisors is an integer number (18403200).

Almost surely, 2^1420173240 is an apocalyptic number.

1420173240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1420173240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2355609600).

1420173240 is an abundant number, since it is smaller than the sum of its proper divisors (3291045960).

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

1420173240 is a wasteful number, since it uses less digits than its factorization.

1420173240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418 (or 414 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 1420173240 is about 37685.1859488579. The cubic root of 1420173240 is about 1124.0365717173.

Adding to 1420173240 its reverse (423710241), we get a palindrome (1843883481).

The spelling of 1420173240 in words is "one billion, four hundred twenty million, one hundred seventy-three thousand, two hundred forty".