149042147 has 4 divisors (see below), whose sum is σ = 149956680. Its totient is φ = 148127616.

The previous prime is 149042063. The next prime is 149042177. The reversal of 149042147 is 741240941.

149042147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 149042147 - 2⁸ = 149041891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149042177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 457022 + ... + 457347.

It is an arithmetic number, because the mean of its divisors is an integer number (37489170).

Almost surely, 2^149042147 is an apocalyptic number.

149042147 is a deficient number, since it is larger than the sum of its proper divisors (914533).

149042147 is an equidigital number, since it uses as much as digits as its factorization.

149042147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914532.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 149042147 is about 12208.2819020532. The cubic root of 149042147 is about 530.1959012372.

The spelling of 149042147 in words is "one hundred forty-nine million, forty-two thousand, one hundred forty-seven".