420135255530 has 32 divisors (see below), whose sum is σ = 812982908160. Its totient is φ = 155821717440.

The previous prime is 420135255523. The next prime is 420135255541. The reversal of 420135255530 is 35552531024.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23514881 + ... + 23532740.

It is an arithmetic number, because the mean of its divisors is an integer number (25405715880).

Almost surely, 2^420135255530 is an apocalyptic number.

420135255530 is a deficient number, since it is larger than the sum of its proper divisors (392847652630).

420135255530 is a wasteful number, since it uses less digits than its factorization.

420135255530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47047694.

The product of its (nonzero) digits is 90000, while the sum is 35.

Adding to 420135255530 its reverse (35552531024), we get a palindrome (455687786554).

The spelling of 420135255530 in words is "four hundred twenty billion, one hundred thirty-five million, two hundred fifty-five thousand, five hundred thirty".