420203442 has 16 divisors (see below), whose sum is σ = 841690080. Its totient is φ = 139853952.

The previous prime is 420203401. The next prime is 420203447. The reversal of 420203442 is 244302024.

It is not an unprimeable number, because it can be changed into a prime (420203447) 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, 49183 + ... + 57090.

It is an arithmetic number, because the mean of its divisors is an integer number (52605630).

Almost surely, 2^420203442 is an apocalyptic number.

420203442 is an abundant number, since it is smaller than the sum of its proper divisors (421486638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420203442 is a wasteful number, since it uses less digits than its factorization.

420203442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106937.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 420203442 is about 20498.8644075715. The cubic root of 420203442 is about 749.0081359637.

Adding to 420203442 its reverse (244302024), we get a palindrome (664505466).

The spelling of 420203442 in words is "four hundred twenty million, two hundred three thousand, four hundred forty-two".