530400042 has 64 divisors (see below), whose sum is σ = 1202636160. Its totient is φ = 173238912.

The previous prime is 530400037. The next prime is 530400043. The reversal of 530400042 is 240004035.

It is a happy number.

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 = 530399988 and 530400024.

It is not an unprimeable number, because it can be changed into a prime (530400043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 776233 + ... + 776915.

It is an arithmetic number, because the mean of its divisors is an integer number (18791190).

Almost surely, 2^530400042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 530400042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (601318080).

530400042 is an abundant number, since it is smaller than the sum of its proper divisors (672236118).

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

530400042 is a wasteful number, since it uses less digits than its factorization.

530400042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964 (or 958 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 530400042 is about 23030.4155846133. The cubic root of 530400042 is about 809.4707928679.

Adding to 530400042 its reverse (240004035), we get a palindrome (770404077).

The spelling of 530400042 in words is "five hundred thirty million, four hundred thousand, forty-two".