149805427 has 2 divisors, whose sum is σ = 149805428. Its totient is φ = 149805426.

The previous prime is 149805419. The next prime is 149805437. The reversal of 149805427 is 724508941.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 149805427 - 2³ = 149805419 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 149805427.

It is not a weakly prime, because it can be changed into another prime (149805437) 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, 74902713 + 74902714.

It is an arithmetic number, because the mean of its divisors is an integer number (74902714).

Almost surely, 2^149805427 is an apocalyptic number.

149805427 is a deficient number, since it is larger than the sum of its proper divisors (1).

149805427 is an equidigital number, since it uses as much as digits as its factorization.

149805427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 149805427 is about 12239.5027268268. The cubic root of 149805427 is about 531.0994466668.

The spelling of 149805427 in words is "one hundred forty-nine million, eight hundred five thousand, four hundred twenty-seven".