420301523 has 8 divisors (see below), whose sum is σ = 445817520. Its totient is φ = 394873600.

The previous prime is 420301513. The next prime is 420301543. The reversal of 420301523 is 325103024.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 420301523 - 2⁴ = 420301507 is a prime.

It is a super-2 number, since 2×420301523² = 353306740472239058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 420301495 and 420301504.

It is not an unprimeable number, because it can be changed into a prime (420301513) 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, 12053 + ... + 31398.

It is an arithmetic number, because the mean of its divisors is an integer number (55727190).

Almost surely, 2^420301523 is an apocalyptic number.

420301523 is a deficient number, since it is larger than the sum of its proper divisors (25515997).

420301523 is a wasteful number, since it uses less digits than its factorization.

420301523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44037.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 420301523 is about 20501.2566200221. The cubic root of 420301523 is about 749.0664075409.

Adding to 420301523 its reverse (325103024), we get a palindrome (745404547).

The spelling of 420301523 in words is "four hundred twenty million, three hundred one thousand, five hundred twenty-three".