142400163481 has 2 divisors, whose sum is σ = 142400163482. Its totient is φ = 142400163480.

The previous prime is 142400163469. The next prime is 142400163523. The reversal of 142400163481 is 184361004241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88339728400 + 54060435081 = 297220^2 + 232509^2 .

It is a cyclic number.

It is not a de Polignac number, because 142400163481 - 2²⁷ = 142265945753 is a prime.

It is a super-2 number, since 2×142400163481² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (142400163421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71200081740 + 71200081741.

It is an arithmetic number, because the mean of its divisors is an integer number (71200081741).

Almost surely, 2^142400163481 is an apocalyptic number.

It is an amenable number.

142400163481 is a deficient number, since it is larger than the sum of its proper divisors (1).

142400163481 is an equidigital number, since it uses as much as digits as its factorization.

142400163481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 34.

The spelling of 142400163481 in words is "one hundred forty-two billion, four hundred million, one hundred sixty-three thousand, four hundred eighty-one".