142149349801 has 2 divisors, whose sum is σ = 142149349802. Its totient is φ = 142149349800.

The previous prime is 142149349781. The next prime is 142149349831. The reversal of 142149349801 is 108943941241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129136016025 + 13013333776 = 359355^2 + 114076^2 .

It is a cyclic number.

It is not a de Polignac number, because 142149349801 - 2⁷ = 142149349673 is a prime.

It is not a weakly prime, because it can be changed into another prime (142149349831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71074674900 + 71074674901.

It is an arithmetic number, because the mean of its divisors is an integer number (71074674901).

Almost surely, 2^142149349801 is an apocalyptic number.

It is an amenable number.

142149349801 is a deficient number, since it is larger than the sum of its proper divisors (1).

142149349801 is an equidigital number, since it uses as much as digits as its factorization.

142149349801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 46.

The spelling of 142149349801 in words is "one hundred forty-two billion, one hundred forty-nine million, three hundred forty-nine thousand, eight hundred one".