142756783981 has 16 divisors (see below), whose sum is σ = 163607261184. Its totient is φ = 122020812144.

The previous prime is 142756783973. The next prime is 142756784029. The reversal of 142756783981 is 189387657241.

It is not a de Polignac number, because 142756783981 - 2³ = 142756783973 is a prime.

It is a super-2 number, since 2×142756783981² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142756783921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5389536 + ... + 5415958.

It is an arithmetic number, because the mean of its divisors is an integer number (10225453824).

Almost surely, 2^142756783981 is an apocalyptic number.

It is an amenable number.

142756783981 is a deficient number, since it is larger than the sum of its proper divisors (20850477203).

142756783981 is a wasteful number, since it uses less digits than its factorization.

142756783981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28560.

The product of its digits is 20321280, while the sum is 61.

The spelling of 142756783981 in words is "one hundred forty-two billion, seven hundred fifty-six million, seven hundred eighty-three thousand, nine hundred eighty-one".