20142430040 has 32 divisors (see below), whose sum is σ = 45866504880. Its totient is φ = 7959898752.

The previous prime is 20142430039. The next prime is 20142430057. The reversal of 20142430040 is 4003424102.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 20142429994 and 20142430021.

It is a congruent number.

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, 3030179 + ... + 3036818.

Almost surely, 2^20142430040 is an apocalyptic number.

20142430040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20142430040 is an abundant number, since it is smaller than the sum of its proper divisors (25724074840).

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

20142430040 is a wasteful number, since it uses less digits than its factorization.

20142430040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6067091 (or 6067087 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 20142430040 its reverse (4003424102), we get a palindrome (24145854142).

The spelling of 20142430040 in words is "twenty billion, one hundred forty-two million, four hundred thirty thousand, forty".