149345442 has 24 divisors (see below), whose sum is σ = 342616716. Its totient is φ = 46853376.

The previous prime is 149345437. The next prime is 149345473. The reversal of 149345442 is 244543941.

It can be written as a sum of positive squares in 2 ways, for example, as 148133241 + 1212201 = 12171^2 + 1101^2 .

It is a super-2 number, since 2×149345442² = 44608122092350728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 149345397 and 149345406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 243723 + ... + 244334.

Almost surely, 2^149345442 is an apocalyptic number.

149345442 is an abundant number, since it is smaller than the sum of its proper divisors (193271274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

149345442 is a wasteful number, since it uses less digits than its factorization.

149345442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488082 (or 488079 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 149345442 is about 12220.6972796154. The cubic root of 149345442 is about 530.5553002717. Note that the first 3 decimals are identical.

The spelling of 149345442 in words is "one hundred forty-nine million, three hundred forty-five thousand, four hundred forty-two".