149120866 has 4 divisors (see below), whose sum is σ = 223681302. Its totient is φ = 74560432.

The previous prime is 149120863. The next prime is 149120869. The reversal of 149120866 is 668021941.

It is a happy number.

149120866 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 an interprime number because it is at equal distance from previous prime (149120863) and next prime (149120869).

It can be written as a sum of positive squares in only one way, i.e., 82355625 + 66765241 = 9075^2 + 8171^2 .

It is not an unprimeable number, because it can be changed into a prime (149120863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37280215 + ... + 37280218.

Almost surely, 2^149120866 is an apocalyptic number.

149120866 is a deficient number, since it is larger than the sum of its proper divisors (74560436).

149120866 is an equidigital number, since it uses as much as digits as its factorization.

149120866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74560435.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 149120866 is about 12211.5054763940. The cubic root of 149120866 is about 530.2892286308.

The spelling of 149120866 in words is "one hundred forty-nine million, one hundred twenty thousand, eight hundred sixty-six".