149242240 has 96 divisors (see below), whose sum is σ = 415119600. Its totient is φ = 51158016.

The previous prime is 149242237. The next prime is 149242253. The reversal of 149242240 is 42242941.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 149242199 and 149242208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28981 + ... + 33739.

Almost surely, 2^149242240 is an apocalyptic number.

149242240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 149242240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207559800).

149242240 is an abundant number, since it is smaller than the sum of its proper divisors (265877360).

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

149242240 is an equidigital number, since it uses as much as digits as its factorization.

149242240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4792 (or 4773 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 149242240 is about 12216.4741230848. The cubic root of 149242240 is about 530.4330624484.

The spelling of 149242240 in words is "one hundred forty-nine million, two hundred forty-two thousand, two hundred forty".