149320247 has 4 divisors (see below), whose sum is σ = 150070800. Its totient is φ = 148569696.

The previous prime is 149320207. The next prime is 149320267. The reversal of 149320247 is 742023941.

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 149320247 - 2¹⁰ = 149319223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149320207) 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, 374978 + ... + 375375.

It is an arithmetic number, because the mean of its divisors is an integer number (37517700).

Almost surely, 2^149320247 is an apocalyptic number.

149320247 is a deficient number, since it is larger than the sum of its proper divisors (750553).

149320247 is an equidigital number, since it uses as much as digits as its factorization.

149320247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750552.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 149320247 is about 12219.6664029752. Note that the first 3 decimals coincide. The cubic root of 149320247 is about 530.5254631987.

The spelling of 149320247 in words is "one hundred forty-nine million, three hundred twenty thousand, two hundred forty-seven".