1420703125 has 18 divisors (see below), whose sum is σ = 1776366278. Its totient is φ = 1136250000.

The previous prime is 1420703111. The next prime is 1420703143. The reversal of 1420703125 is 5213070241.

It is a happy number.

It can be written as a sum of positive squares in 9 ways, for example, as 124055044 + 1296648081 = 11138^2 + 36009^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1420703125 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1420703125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 388807 + ... + 392443.

Almost surely, 2^1420703125 is an apocalyptic number.

It is an amenable number.

1420703125 is a deficient number, since it is larger than the sum of its proper divisors (355663153).

1420703125 is an frugal number, since it uses more digits than its factorization.

1420703125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3677 (or 3642 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 1420703125 is about 37692.2157082865. The cubic root of 1420703125 is about 1124.1763518608.

Adding to 1420703125 its reverse (5213070241), we get a palindrome (6633773366).

The spelling of 1420703125 in words is "one billion, four hundred twenty million, seven hundred three thousand, one hundred twenty-five".