149112971 has 4 divisors (see below), whose sum is σ = 170414832. Its totient is φ = 127811112.

The previous prime is 149112961. The next prime is 149112991. The reversal of 149112971 is 179211941.

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 149112971 - 2²² = 144918667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149112961) 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, 10650920 + ... + 10650933.

It is an arithmetic number, because the mean of its divisors is an integer number (42603708).

Almost surely, 2^149112971 is an apocalyptic number.

149112971 is a deficient number, since it is larger than the sum of its proper divisors (21301861).

149112971 is an equidigital number, since it uses as much as digits as its factorization.

149112971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21301860.

The product of its digits is 4536, while the sum is 35.

The square root of 149112971 is about 12211.1822113995. The cubic root of 149112971 is about 530.2798699867.

The spelling of 149112971 in words is "one hundred forty-nine million, one hundred twelve thousand, nine hundred seventy-one".