420542620511 has 24 divisors (see below), whose sum is σ = 458598193200. Its totient is φ = 383358852864.

The previous prime is 420542620507. The next prime is 420542620609. The reversal of 420542620511 is 115026245024.

It is not a de Polignac number, because 420542620511 - 2² = 420542620507 is a prime.

It is a super-2 number, since 2×420542620511² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420542320511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48339440 + ... + 48348138.

It is an arithmetic number, because the mean of its divisors is an integer number (19108258050).

Almost surely, 2^420542620511 is an apocalyptic number.

420542620511 is a deficient number, since it is larger than the sum of its proper divisors (38055572689).

420542620511 is a wasteful number, since it uses less digits than its factorization.

420542620511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9243 (or 9134 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 420542620511 its reverse (115026245024), we get a palindrome (535568865535).

The spelling of 420542620511 in words is "four hundred twenty billion, five hundred forty-two million, six hundred twenty thousand, five hundred eleven".