420052545 has 24 divisors (see below), whose sum is σ = 794282112. Its totient is φ = 203661600.

The previous prime is 420052517. The next prime is 420052553. The reversal of 420052545 is 545250024.

It is not a de Polignac number, because 420052545 - 2⁶ = 420052481 is a prime.

It is a super-3 number, since 3×420052545³ (a number of 27 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 423801 + ... + 424790.

It is an arithmetic number, because the mean of its divisors is an integer number (33095088).

Almost surely, 2^420052545 is an apocalyptic number.

420052545 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

420052545 is a deficient number, since it is larger than the sum of its proper divisors (374229567).

420052545 is a wasteful number, since it uses less digits than its factorization.

420052545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848613 (or 848610 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 420052545 is about 20495.1834585592. The cubic root of 420052545 is about 748.9184678005.

The spelling of 420052545 in words is "four hundred twenty million, fifty-two thousand, five hundred forty-five".