142013421540 has 72 divisors (see below), whose sum is σ = 431472557880. Its totient is φ = 37808838144.

The previous prime is 142013421527. The next prime is 142013421551. The reversal of 142013421540 is 45124310241.

It can be written as a sum of positive squares in 4 ways, for example, as 7745408064 + 134268013476 = 88008^2 + 366426^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 528295 + ... + 750414.

It is an arithmetic number, because the mean of its divisors is an integer number (5992674415).

Almost surely, 2^142013421540 is an apocalyptic number.

142013421540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142013421540 is an abundant number, since it is smaller than the sum of its proper divisors (289459136340).

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

142013421540 is a wasteful number, since it uses less digits than its factorization.

142013421540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279341 (or 1279336 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 142013421540 its reverse (45124310241), we get a palindrome (187137731781).

The spelling of 142013421540 in words is "one hundred forty-two billion, thirteen million, four hundred twenty-one thousand, five hundred forty".