149748442 has 4 divisors (see below), whose sum is σ = 224622666. Its totient is φ = 74874220.

The previous prime is 149748419. The next prime is 149748449. The reversal of 149748442 is 244847941.

It is a happy number.

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., 147841281 + 1907161 = 12159^2 + 1381^2 .

It is not an unprimeable number, because it can be changed into a prime (149748449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37437109 + ... + 37437112.

Almost surely, 2^149748442 is an apocalyptic number.

149748442 is a deficient number, since it is larger than the sum of its proper divisors (74874224).

149748442 is an equidigital number, since it uses as much as digits as its factorization.

149748442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74874223.

The product of its digits is 258048, while the sum is 43.

The square root of 149748442 is about 12237.1745922006. The cubic root of 149748442 is about 531.0320958796.

The spelling of 149748442 in words is "one hundred forty-nine million, seven hundred forty-eight thousand, four hundred forty-two".