20430530142 has 16 divisors (see below), whose sum is σ = 44575702272. Its totient is φ = 6191069720.

The previous prime is 20430530077. The next prime is 20430530143. The reversal of 20430530142 is 24103503402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20430530143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154776678 + ... + 154776809.

It is an arithmetic number, because the mean of its divisors is an integer number (2785981392).

Almost surely, 2^20430530142 is an apocalyptic number.

20430530142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20430530142 is an abundant number, since it is smaller than the sum of its proper divisors (24145172130).

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

20430530142 is a wasteful number, since it uses less digits than its factorization.

20430530142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309553503.

The product of its (nonzero) digits is 2880, while the sum is 24.

The spelling of 20430530142 in words is "twenty billion, four hundred thirty million, five hundred thirty thousand, one hundred forty-two".