420660125 has 8 divisors (see below), whose sum is σ = 524983992. Its totient is φ = 336528000.

The previous prime is 420660113. The next prime is 420660139. The reversal of 420660125 is 521066024.

It can be written as a sum of positive squares in 4 ways, for example, as 32924644 + 387735481 = 5738^2 + 19691^2 .

It is not a de Polignac number, because 420660125 - 2⁶ = 420660061 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420660094 and 420660103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1682516 + ... + 1682765.

It is an arithmetic number, because the mean of its divisors is an integer number (65622999).

Almost surely, 2^420660125 is an apocalyptic number.

It is an amenable number.

420660125 is a deficient number, since it is larger than the sum of its proper divisors (104323867).

420660125 is an equidigital number, since it uses as much as digits as its factorization.

420660125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3365296 (or 3365286 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 420660125 is about 20510.0006094588. Note that the first 3 decimals coincide. The cubic root of 420660125 is about 749.2793819086.

It can be divided in two parts, 4206601 and 25, that multiplied together give a square (105165025 = 10255²).

The spelling of 420660125 in words is "four hundred twenty million, six hundred sixty thousand, one hundred twenty-five".