420140101 has 4 divisors (see below), whose sum is σ = 424066752. Its totient is φ = 416213452.

The previous prime is 420140053. The next prime is 420140111. The reversal of 420140101 is 101041024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 420140101 - 2¹⁵ = 420107333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420140111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1963165 + ... + 1963378.

It is an arithmetic number, because the mean of its divisors is an integer number (106016688).

Almost surely, 2^420140101 is an apocalyptic number.

It is an amenable number.

420140101 is a deficient number, since it is larger than the sum of its proper divisors (3926651).

420140101 is a wasteful number, since it uses less digits than its factorization.

420140101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3926650.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 420140101 is about 20497.3193613214. The cubic root of 420140101 is about 748.9704991877.

Adding to 420140101 its reverse (101041024), we get a palindrome (521181125).

The spelling of 420140101 in words is "four hundred twenty million, one hundred forty thousand, one hundred one".