420242302109 has 16 divisors (see below), whose sum is σ = 493323038208. Its totient is φ = 350425688832.

The previous prime is 420242302093. The next prime is 420242302111. The reversal of 420242302109 is 901203242024.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 420242302109 - 2⁴ = 420242302093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420242302009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1914284 + ... + 2122490.

It is an arithmetic number, because the mean of its divisors is an integer number (30832689888).

Almost surely, 2^420242302109 is an apocalyptic number.

It is an amenable number.

420242302109 is a deficient number, since it is larger than the sum of its proper divisors (73080736099).

420242302109 is a wasteful number, since it uses less digits than its factorization.

420242302109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216044.

The product of its (nonzero) digits is 6912, while the sum is 29.

The spelling of 420242302109 in words is "four hundred twenty billion, two hundred forty-two million, three hundred two thousand, one hundred nine".