154042240 has 64 divisors (see below), whose sum is σ = 401753520. Its totient is φ = 56012800.

The previous prime is 154042223. The next prime is 154042243. The reversal of 154042240 is 42240451.

It is a happy number.

154042240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154042243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3901 + ... + 17980.

Almost surely, 2^154042240 is an apocalyptic number.

154042240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

154042240 is an abundant number, since it is smaller than the sum of its proper divisors (247711280).

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

154042240 is a wasteful number, since it uses less digits than its factorization.

154042240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21911 (or 21899 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 154042240 is about 12411.3754274053. The cubic root of 154042240 is about 536.0598433221.

Adding to 154042240 its reverse (42240451), we get a palindrome (196282691).

The spelling of 154042240 in words is "one hundred fifty-four million, forty-two thousand, two hundred forty".