149858 has 4 divisors (see below), whose sum is σ = 224790. Its totient is φ = 74928.

The previous prime is 149839. The next prime is 149861. The reversal of 149858 is 858941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 858941 = 61 ⋅14081.

It can be written as a sum of positive squares in only one way, i.e., 85849 + 64009 = 293^2 + 253^2 .

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37463 + ... + 37466.

2¹⁴⁹⁸⁵⁸ is an apocalyptic number.

149858 is a deficient number, since it is larger than the sum of its proper divisors (74932).

149858 is an equidigital number, since it uses as much as digits as its factorization.

149858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74931.

The product of its digits is 11520, while the sum is 35.

The square root of 149858 is about 387.1149700025. The cubic root of 149858 is about 53.1161567749.

The spelling of 149858 in words is "one hundred forty-nine thousand, eight hundred fifty-eight".