142907195981 has 16 divisors (see below), whose sum is σ = 162700462080. Its totient is φ = 124249179120.

The previous prime is 142907195971. The next prime is 142907195989. The reversal of 142907195981 is 189591709241.

It is a happy number.

It is not a de Polignac number, because 142907195981 - 2³⁰ = 141833454157 is a prime.

It is a super-3 number, since 3×142907195981³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142907195989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1895696 + ... + 1969638.

It is an arithmetic number, because the mean of its divisors is an integer number (10168778880).

Almost surely, 2^142907195981 is an apocalyptic number.

142907195981 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

142907195981 is a deficient number, since it is larger than the sum of its proper divisors (19793266099).

142907195981 is a wasteful number, since it uses less digits than its factorization.

142907195981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81616.

The product of its (nonzero) digits is 1632960, while the sum is 56.

The spelling of 142907195981 in words is "one hundred forty-two billion, nine hundred seven million, one hundred ninety-five thousand, nine hundred eighty-one".