149642201 has 2 divisors, whose sum is σ = 149642202. Its totient is φ = 149642200.

The previous prime is 149642183. The next prime is 149642221. The reversal of 149642201 is 102246941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86025625 + 63616576 = 9275^2 + 7976^2 .

It is a cyclic number.

It is not a de Polignac number, because 149642201 - 2¹⁸ = 149380057 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (149642221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74821100 + 74821101.

It is an arithmetic number, because the mean of its divisors is an integer number (74821101).

Almost surely, 2^149642201 is an apocalyptic number.

It is an amenable number.

149642201 is a deficient number, since it is larger than the sum of its proper divisors (1).

149642201 is an equidigital number, since it uses as much as digits as its factorization.

149642201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 149642201 is about 12232.8329098374. The cubic root of 149642201 is about 530.9064836030.

The spelling of 149642201 in words is "one hundred forty-nine million, six hundred forty-two thousand, two hundred one".