1420125728 has 24 divisors (see below), whose sum is σ = 3195283392. Its totient is φ = 608625216.

The previous prime is 1420125709. The next prime is 1420125743. The reversal of 1420125728 is 8275210241.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 1420125694 and 1420125703.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3169700 + ... + 3170147.

It is an arithmetic number, because the mean of its divisors is an integer number (133136808).

Almost surely, 2^1420125728 is an apocalyptic number.

It is an amenable number.

1420125728 is an abundant number, since it is smaller than the sum of its proper divisors (1775157664).

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

1420125728 is an equidigital number, since it uses as much as digits as its factorization.

1420125728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6339864 (or 6339856 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 1420125728 is about 37684.5555632543. Note that the first 4 decimals coincide. The cubic root of 1420125728 is about 1124.0240366689.

Adding to 1420125728 its reverse (8275210241), we get a palindrome (9695335969).

The spelling of 1420125728 in words is "one billion, four hundred twenty million, one hundred twenty-five thousand, seven hundred twenty-eight".