142021423540 has 48 divisors (see below), whose sum is σ = 304621914240. Its totient is φ = 55605432960.

The previous prime is 142021423501. The next prime is 142021423567. The reversal of 142021423540 is 45324120241.

It is a super-2 number, since 2×142021423540² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 142021423499 and 142021423508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162387 + ... + 557146.

It is an arithmetic number, because the mean of its divisors is an integer number (6346289880).

Almost surely, 2^142021423540 is an apocalyptic number.

142021423540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142021423540 is an abundant number, since it is smaller than the sum of its proper divisors (162600490700).

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

142021423540 is a wasteful number, since it uses less digits than its factorization.

142021423540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719752 (or 719750 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 142021423540 its reverse (45324120241), we get a palindrome (187345543781).

The spelling of 142021423540 in words is "one hundred forty-two billion, twenty-one million, four hundred twenty-three thousand, five hundred forty".