420532101 has 16 divisors (see below), whose sum is σ = 679648320. Its totient is φ = 254867760.

The previous prime is 420532097. The next prime is 420532141. The reversal of 420532101 is 101235024.

It is not a de Polignac number, because 420532101 - 2² = 420532097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420532141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 707670 + ... + 708263.

It is an arithmetic number, because the mean of its divisors is an integer number (42478020).

Almost surely, 2^420532101 is an apocalyptic number.

It is an amenable number.

420532101 is a deficient number, since it is larger than the sum of its proper divisors (259116219).

420532101 is a wasteful number, since it uses less digits than its factorization.

420532101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1415953 (or 1415947 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 420532101 is about 20506.8793579130. The cubic root of 420532101 is about 749.2033621237.

Adding to 420532101 its reverse (101235024), we get a palindrome (521767125).

The spelling of 420532101 in words is "four hundred twenty million, five hundred thirty-two thousand, one hundred one".