1002123430 has 32 divisors (see below), whose sum is σ = 2248922880. Its totient is φ = 312349920.

The previous prime is 1002123389. The next prime is 1002123431. The reversal of 1002123430 is 343212001.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002123431) 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 15 ways as a sum of consecutive naturals, for example, 649960 + ... + 651499.

It is an arithmetic number, because the mean of its divisors is an integer number (70278840).

Almost surely, 2^1002123430 is an apocalyptic number.

1002123430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1002123430 is an abundant number, since it is smaller than the sum of its proper divisors (1246799450).

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

1002123430 is a wasteful number, since it uses less digits than its factorization.

1002123430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1301484.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1002123430 is about 31656.3331736321. Note that the first 3 decimals coincide. The cubic root of 1002123430 is about 1000.7073095952.

Adding to 1002123430 its reverse (343212001), we get a palindrome (1345335431).

The spelling of 1002123430 in words is "one billion, two million, one hundred twenty-three thousand, four hundred thirty".