420129087 has 24 divisors (see below), whose sum is σ = 654166656. Its totient is φ = 239138928.

The previous prime is 420129079. The next prime is 420129113. The reversal of 420129087 is 780921024.

It is a happy number.

It is not a de Polignac number, because 420129087 - 2³ = 420129079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420129067) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33228 + ... + 44094.

It is an arithmetic number, because the mean of its divisors is an integer number (27256944).

Almost surely, 2^420129087 is an apocalyptic number.

420129087 is a deficient number, since it is larger than the sum of its proper divisors (234037569).

420129087 is a wasteful number, since it uses less digits than its factorization.

420129087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11147 (or 11140 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 420129087 is about 20497.0506902822. The cubic root of 420129087 is about 748.9639543605.

The spelling of 420129087 in words is "four hundred twenty million, one hundred twenty-nine thousand, eighty-seven".