420144140524 has 48 divisors (see below), whose sum is σ = 750596778400. Its totient is φ = 205742923776.

The previous prime is 420144140497. The next prime is 420144140527. The reversal of 420144140524 is 425041441024.

It is not an unprimeable number, because it can be changed into a prime (420144140527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16868272 + ... + 16893160.

Almost surely, 2^420144140524 is an apocalyptic number.

It is an amenable number.

420144140524 is a deficient number, since it is larger than the sum of its proper divisors (330452637876).

420144140524 is a wasteful number, since it uses less digits than its factorization.

420144140524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25442 (or 25440 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 31.

Adding to 420144140524 its reverse (425041441024), we get a palindrome (845185581548).

The spelling of 420144140524 in words is "four hundred twenty billion, one hundred forty-four million, one hundred forty thousand, five hundred twenty-four".