149428073 has 4 divisors (see below), whose sum is σ = 150604800. Its totient is φ = 148251348.

The previous prime is 149428051. The next prime is 149428109. The reversal of 149428073 is 370824941.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 149428073 - 2⁶ = 149428009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149428373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 588173 + ... + 588426.

It is an arithmetic number, because the mean of its divisors is an integer number (37651200).

Almost surely, 2^149428073 is an apocalyptic number.

It is an amenable number.

149428073 is a deficient number, since it is larger than the sum of its proper divisors (1176727).

149428073 is a wasteful number, since it uses less digits than its factorization.

149428073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1176726.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 149428073 is about 12224.0775930129. The cubic root of 149428073 is about 530.6531321427.

The spelling of 149428073 in words is "one hundred forty-nine million, four hundred twenty-eight thousand, seventy-three".