142436661401 has 2 divisors, whose sum is σ = 142436661402. Its totient is φ = 142436661400.

The previous prime is 142436661343. The next prime is 142436661413. The reversal of 142436661401 is 104166634241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140343141376 + 2093520025 = 374624^2 + 45755^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142436661401 is a prime.

It is a super-2 number, since 2×142436661401² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (142436861401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71218330700 + 71218330701.

It is an arithmetic number, because the mean of its divisors is an integer number (71218330701).

Almost surely, 2^142436661401 is an apocalyptic number.

It is an amenable number.

142436661401 is a deficient number, since it is larger than the sum of its proper divisors (1).

142436661401 is an equidigital number, since it uses as much as digits as its factorization.

142436661401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 38.

The spelling of 142436661401 in words is "one hundred forty-two billion, four hundred thirty-six million, six hundred sixty-one thousand, four hundred one".