420131445 has 8 divisors (see below), whose sum is σ = 672210336. Its totient is φ = 224070096.

The previous prime is 420131443. The next prime is 420131447. The reversal of 420131445 is 544131024.

It is an interprime number because it is at equal distance from previous prime (420131443) and next prime (420131447).

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

It is not a de Polignac number, because 420131445 - 2¹ = 420131443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420131441) 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, 14004367 + ... + 14004396.

It is an arithmetic number, because the mean of its divisors is an integer number (84026292).

Almost surely, 2^420131445 is an apocalyptic number.

It is an amenable number.

420131445 is a deficient number, since it is larger than the sum of its proper divisors (252078891).

420131445 is a wasteful number, since it uses less digits than its factorization.

420131445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28008771.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 420131445 is about 20497.1082106721. The cubic root of 420131445 is about 748.9653555597.

Adding to 420131445 its reverse (544131024), we get a palindrome (964262469).

The spelling of 420131445 in words is "four hundred twenty million, one hundred thirty-one thousand, four hundred forty-five".