154042440 has 64 divisors (see below), whose sum is σ = 489317760. Its totient is φ = 38661120.

The previous prime is 154042429. The next prime is 154042463. The reversal of 154042440 is 44240451.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 154042440.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35716 + ... + 39795.

It is an arithmetic number, because the mean of its divisors is an integer number (7645590).

Almost surely, 2^154042440 is an apocalyptic number.

154042440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

154042440 is an abundant number, since it is smaller than the sum of its proper divisors (335275320).

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

154042440 is a wasteful number, since it uses less digits than its factorization.

154042440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75542 (or 75538 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 154042440 is about 12411.3834845274. The cubic root of 154042440 is about 536.0600753189.

Adding to 154042440 its reverse (44240451), we get a palindrome (198282891).

The spelling of 154042440 in words is "one hundred fifty-four million, forty-two thousand, four hundred forty".