1040430042 has 64 divisors (see below), whose sum is σ = 2399472000. Its totient is φ = 333777024.

The previous prime is 1040430037. The next prime is 1040430043. The reversal of 1040430042 is 2400340401.

It is a super-2 number, since 2×1040430042² = 2164989344592243528, which contains 22 as substring.

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 = 1040429997 and 1040430024.

It is not an unprimeable number, because it can be changed into a prime (1040430043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 592638 + ... + 594390.

It is an arithmetic number, because the mean of its divisors is an integer number (37491750).

Almost surely, 2^1040430042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1040430042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1199736000).

1040430042 is an abundant number, since it is smaller than the sum of its proper divisors (1359041958).

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

1040430042 is a wasteful number, since it uses less digits than its factorization.

1040430042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2172 (or 2166 counting only the distinct ones).

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

The square root of 1040430042 is about 32255.6978222453. The cubic root of 1040430042 is about 1013.2990323637.

Adding to 1040430042 its reverse (2400340401), we get a palindrome (3440770443).

The spelling of 1040430042 in words is "one billion, forty million, four hundred thirty thousand, forty-two".