420410511542 has 24 divisors (see below), whose sum is σ = 733640782896. Its totient is φ = 180159394128.

The previous prime is 420410511503. The next prime is 420410511553. The reversal of 420410511542 is 245115014024.

It is a happy number.

It is a super-2 number, since 2×420410511542² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 907583 + ... + 1290165.

It is an arithmetic number, because the mean of its divisors is an integer number (30568365954).

Almost surely, 2^420410511542 is an apocalyptic number.

420410511542 is a deficient number, since it is larger than the sum of its proper divisors (313230271354).

420410511542 is a wasteful number, since it uses less digits than its factorization.

420410511542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393812 (or 393805 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

Adding to 420410511542 its reverse (245115014024), we get a palindrome (665525525566).

The spelling of 420410511542 in words is "four hundred twenty billion, four hundred ten million, five hundred eleven thousand, five hundred forty-two".