142001278501 has 2 divisors, whose sum is σ = 142001278502. Its totient is φ = 142001278500.

The previous prime is 142001278429. The next prime is 142001278567. The reversal of 142001278501 is 105872100241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138383256001 + 3618022500 = 371999^2 + 60150^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142001278501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142001278591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71000639250 + 71000639251.

It is an arithmetic number, because the mean of its divisors is an integer number (71000639251).

Almost surely, 2^142001278501 is an apocalyptic number.

It is an amenable number.

142001278501 is a deficient number, since it is larger than the sum of its proper divisors (1).

142001278501 is an equidigital number, since it uses as much as digits as its factorization.

142001278501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4480, while the sum is 31.

Adding to 142001278501 its reverse (105872100241), we get a palindrome (247873378742).

The spelling of 142001278501 in words is "one hundred forty-two billion, one million, two hundred seventy-eight thousand, five hundred one".