420451533 has 8 divisors (see below), whose sum is σ = 622891200. Its totient is φ = 280301004.

The previous prime is 420451469. The next prime is 420451553. The reversal of 420451533 is 335154024.

It is not a de Polignac number, because 420451533 - 2⁶ = 420451469 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 15572279 = 420451533 / (4 + 2 + 0 + 4 + 5 + 1 + 5 + 3 + 3).

It is a junction number, because it is equal to n+sod(n) for n = 420451497 and 420451506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420451553) 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, 7786113 + ... + 7786166.

It is an arithmetic number, because the mean of its divisors is an integer number (77861400).

Almost surely, 2^420451533 is an apocalyptic number.

It is an amenable number.

420451533 is a deficient number, since it is larger than the sum of its proper divisors (202439667).

420451533 is a wasteful number, since it uses less digits than its factorization.

420451533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15572288 (or 15572282 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 420451533 is about 20504.9148498598. The cubic root of 420451533 is about 749.1555134802.

The spelling of 420451533 in words is "four hundred twenty million, four hundred fifty-one thousand, five hundred thirty-three".