142186815380 has 12 divisors (see below), whose sum is σ = 298592312340. Its totient is φ = 56874726144.

The previous prime is 142186815371. The next prime is 142186815391. The reversal of 142186815380 is 83518681241.

It can be written as a sum of positive squares in 2 ways, for example, as 71360573956 + 70826241424 = 267134^2 + 266132^2 .

It is a super-3 number, since 3×142186815380³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3554670365 + ... + 3554670404.

It is an arithmetic number, because the mean of its divisors is an integer number (24882692695).

Almost surely, 2^142186815380 is an apocalyptic number.

142186815380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142186815380 is an abundant number, since it is smaller than the sum of its proper divisors (156405496960).

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

142186815380 is a wasteful number, since it uses less digits than its factorization.

142186815380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7109340778 (or 7109340776 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 47.

The spelling of 142186815380 in words is "one hundred forty-two billion, one hundred eighty-six million, eight hundred fifteen thousand, three hundred eighty".