149204047 has 4 divisors (see below), whose sum is σ = 149536800. Its totient is φ = 148871296.

The previous prime is 149204021. The next prime is 149204051. The reversal of 149204047 is 740402941.

149204047 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, and also an emirpimes, since its reverse is a distinct semiprime: 740402941 = 2003 ⋅369647.

It is a cyclic number.

It is not a de Polignac number, because 149204047 - 2¹⁹ = 148679759 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149204747) 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, 165703 + ... + 166600.

It is an arithmetic number, because the mean of its divisors is an integer number (37384200).

Almost surely, 2^149204047 is an apocalyptic number.

149204047 is a deficient number, since it is larger than the sum of its proper divisors (332753).

149204047 is an equidigital number, since it uses as much as digits as its factorization.

149204047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332752.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 149204047 is about 12214.9108469935. The cubic root of 149204047 is about 530.3878103840.

Adding to 149204047 its reverse (740402941), we get a palindrome (889606988).

The spelling of 149204047 in words is "one hundred forty-nine million, two hundred four thousand, forty-seven".