620040042 has 16 divisors (see below), whose sum is σ = 1377866880. Its totient is φ = 206679996.

The previous prime is 620040013. The next prime is 620040067. The reversal of 620040042 is 240040026.

620040042 is a `hidden beast` number, since 620 + 0 + 4 + 0 + 0 + 42 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 620039997 and 620040024.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5741058 + ... + 5741165.

It is an arithmetic number, because the mean of its divisors is an integer number (86116680).

Almost surely, 2^620040042 is an apocalyptic number.

620040042 is an abundant number, since it is smaller than the sum of its proper divisors (757826838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

620040042 is a wasteful number, since it uses less digits than its factorization.

620040042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11482234 (or 11482228 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 620040042 is about 24900.6032457047. The cubic root of 620040042 is about 852.7202548628.

Adding to 620040042 its reverse (240040026), we get a palindrome (860080068).

The spelling of 620040042 in words is "six hundred twenty million, forty thousand, forty-two".