420005115445 has 8 divisors (see below), whose sum is σ = 504014079960. Its totient is φ = 335998798080.

The previous prime is 420005115433. The next prime is 420005115449. The reversal of 420005115445 is 544511500024.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4703490724 + 415301624721 = 68582^2 + 644439^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-420005115445 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420005115449) 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, 294160 + ... + 962569.

It is an arithmetic number, because the mean of its divisors is an integer number (63001759995).

Almost surely, 2^420005115445 is an apocalyptic number.

It is an amenable number.

420005115445 is a deficient number, since it is larger than the sum of its proper divisors (84008964515).

420005115445 is a wasteful number, since it uses less digits than its factorization.

420005115445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1323575.

The product of its (nonzero) digits is 16000, while the sum is 31.

Adding to 420005115445 its reverse (544511500024), we get a palindrome (964516615469).

The spelling of 420005115445 in words is "four hundred twenty billion, five million, one hundred fifteen thousand, four hundred forty-five".