142142040020 has 24 divisors (see below), whose sum is σ = 299028500064. Its totient is φ = 56755822496.

The previous prime is 142142040013. The next prime is 142142040023. The reversal of 142142040020 is 20040241241.

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 = 142142039974 and 142142040001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142142040023) 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 7 ways as a sum of consecutive naturals, for example, 6300554 + ... + 6323073.

It is an arithmetic number, because the mean of its divisors is an integer number (12459520836).

Almost surely, 2^142142040020 is an apocalyptic number.

142142040020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142142040020 is an abundant number, since it is smaller than the sum of its proper divisors (156886460044).

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

142142040020 is a wasteful number, since it uses less digits than its factorization.

142142040020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12624199 (or 12624197 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 142142040020 its reverse (20040241241), we get a palindrome (162182281261).

The spelling of 142142040020 in words is "one hundred forty-two billion, one hundred forty-two million, forty thousand, twenty".