420532550 has 12 divisors (see below), whose sum is σ = 782190636. Its totient is φ = 168213000.

The previous prime is 420532549. The next prime is 420532559. The reversal of 420532550 is 55235024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420532559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4205276 + ... + 4205375.

It is an arithmetic number, because the mean of its divisors is an integer number (65182553).

Almost surely, 2^420532550 is an apocalyptic number.

420532550 is a deficient number, since it is larger than the sum of its proper divisors (361658086).

420532550 is a wasteful number, since it uses less digits than its factorization.

420532550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8410663 (or 8410658 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 420532550 is about 20506.8903054559. The cubic root of 420532550 is about 749.2036287638.

Adding to 420532550 its reverse (55235024), we get a palindrome (475767574).

The spelling of 420532550 in words is "four hundred twenty million, five hundred thirty-two thousand, five hundred fifty".