1420825406 has 32 divisors (see below), whose sum is σ = 2861526528. Its totient is φ = 510985440.

The previous prime is 1420825361. The next prime is 1420825421. The reversal of 1420825406 is 6045280241.

It is a Curzon number.

It is a congruent number.

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, 352850 + ... + 356853.

It is an arithmetic number, because the mean of its divisors is an integer number (89422704).

Almost surely, 2^1420825406 is an apocalyptic number.

1420825406 is an abundant number, since it is smaller than the sum of its proper divisors (1440701122).

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

1420825406 is a wasteful number, since it uses less digits than its factorization.

1420825406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709736.

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 1420825406 is about 37693.8377722407. The cubic root of 1420825406 is about 1124.2086038404.

The spelling of 1420825406 in words is "one billion, four hundred twenty million, eight hundred twenty-five thousand, four hundred six".