142102151720 has 32 divisors (see below), whose sum is σ = 320358040200. Its totient is φ = 56729180928.

The previous prime is 142102151701. The next prime is 142102151743. The reversal of 142102151720 is 27151201241.

It can be written as a sum of positive squares in 4 ways, for example, as 141145981636 + 956170084 = 375694^2 + 30922^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 142102151720.

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, 3469379 + ... + 3510098.

Almost surely, 2^142102151720 is an apocalyptic number.

142102151720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142102151720 is an abundant number, since it is smaller than the sum of its proper divisors (178255888480).

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

142102151720 is a wasteful number, since it uses less digits than its factorization.

142102151720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6979997 (or 6979993 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 26.

Adding to 142102151720 its reverse (27151201241), we get a palindrome (169253352961).

It can be divided in two parts, 1421021 and 51720, that added together give a palindrome (1472741).

The spelling of 142102151720 in words is "one hundred forty-two billion, one hundred two million, one hundred fifty-one thousand, seven hundred twenty".