420145203046 has 96 divisors (see below), whose sum is σ = 688190807808. Its totient is φ = 192018677760.

The previous prime is 420145203031. The next prime is 420145203047. The reversal of 420145203046 is 640302541024.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 420145202999 and 420145203017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420145203047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 728154310 + ... + 728154886.

It is an arithmetic number, because the mean of its divisors is an integer number (7168654248).

Almost surely, 2^420145203046 is an apocalyptic number.

420145203046 is a deficient number, since it is larger than the sum of its proper divisors (268045604762).

420145203046 is a wasteful number, since it uses less digits than its factorization.

420145203046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866 (or 813 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The spelling of 420145203046 in words is "four hundred twenty billion, one hundred forty-five million, two hundred three thousand, forty-six".