149146 has 4 divisors (see below), whose sum is σ = 223722. Its totient is φ = 74572.

The previous prime is 149143. The next prime is 149153. The reversal of 149146 is 641941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 641941 = 727 ⋅883.

It can be written as a sum of positive squares in only one way, i.e., 114921 + 34225 = 339^2 + 185^2 .

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 149146.

It is not an unprimeable number, because it can be changed into a prime (149143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37285 + ... + 37288.

2¹⁴⁹¹⁴⁶ is an apocalyptic number.

149146 is a deficient number, since it is larger than the sum of its proper divisors (74576).

149146 is an equidigital number, since it uses as much as digits as its factorization.

149146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74575.

The product of its digits is 864, while the sum is 25.

The square root of 149146 is about 386.1942516403. The cubic root of 149146 is about 53.0319019992.

It can be divided in two parts, 1491 and 46, that multiplied together give a palindrome (68586).

The spelling of 149146 in words is "one hundred forty-nine thousand, one hundred forty-six".