42120300424 has 16 divisors (see below), whose sum is σ = 79002207900. Its totient is φ = 21053044992.

The previous prime is 42120300419. The next prime is 42120300479. The reversal of 42120300424 is 42400302124.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 39517464100 + 2602836324 = 198790^2 + 51018^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42120300395 and 42120300404.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 862917 + ... + 910420.

Almost surely, 2^42120300424 is an apocalyptic number.

It is an amenable number.

42120300424 is a deficient number, since it is larger than the sum of its proper divisors (36881907476).

42120300424 is a wasteful number, since it uses less digits than its factorization.

42120300424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1776312 (or 1776308 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 42120300424 its reverse (42400302124), we get a palindrome (84520602548).

The spelling of 42120300424 in words is "forty-two billion, one hundred twenty million, three hundred thousand, four hundred twenty-four".