420125555 has 8 divisors (see below), whose sum is σ = 510532800. Its totient is φ = 331845696.

The previous prime is 420125551. The next prime is 420125569. The reversal of 420125555 is 555521024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 420125555 - 2² = 420125551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420125551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 531410 + ... + 532199.

It is an arithmetic number, because the mean of its divisors is an integer number (63816600).

Almost surely, 2^420125555 is an apocalyptic number.

420125555 is a deficient number, since it is larger than the sum of its proper divisors (90407245).

420125555 is a wasteful number, since it uses less digits than its factorization.

420125555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063693.

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 420125555 is about 20496.9645313642. The cubic root of 420125555 is about 748.9618555229.

Adding to 420125555 its reverse (555521024), we get a palindrome (975646579).

The spelling of 420125555 in words is "four hundred twenty million, one hundred twenty-five thousand, five hundred fifty-five".