149542 has 4 divisors (see below), whose sum is σ = 224316. Its totient is φ = 74770.

The previous prime is 149533. The next prime is 149543. The reversal of 149542 is 245941.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149543) by changing a digit.

149542 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, 37384 + ... + 37387.

It is an arithmetic number, because the mean of its divisors is an integer number (56079).

2¹⁴⁹⁵⁴² is an apocalyptic number.

149542 is a deficient number, since it is larger than the sum of its proper divisors (74774).

149542 is an equidigital number, since it uses as much as digits as its factorization.

149542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74773.

The product of its digits is 1440, while the sum is 25.

The square root of 149542 is about 386.7066071326. The cubic root of 149542 is about 53.0787958128.

The spelling of 149542 in words is "one hundred forty-nine thousand, five hundred forty-two".