149642 has 4 divisors (see below), whose sum is σ = 224466. Its totient is φ = 74820.

The previous prime is 149629. The next prime is 149689. The reversal of 149642 is 246941.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 130321 + 19321 = 361^2 + 139^2 .

It is a plaindrome in base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 149642.

It is an unprimeable number.

149642 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37409 + ... + 37412.

2¹⁴⁹⁶⁴² is an apocalyptic number.

149642 is a deficient number, since it is larger than the sum of its proper divisors (74824).

149642 is an equidigital number, since it uses as much as digits as its factorization.

149642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74823.

The product of its digits is 1728, while the sum is 26.

The square root of 149642 is about 386.8358825135. The cubic root of 149642 is about 53.0906245898.

The spelling of 149642 in words is "one hundred forty-nine thousand, six hundred forty-two".