154140450 has 48 divisors (see below), whose sum is σ = 388769760. Its totient is φ = 40405120.

The previous prime is 154140439. The next prime is 154140487. The reversal of 154140450 is 54041451.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 154140450.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 142 + ... + 17558.

It is an arithmetic number, because the mean of its divisors is an integer number (8099370).

Almost surely, 2^154140450 is an apocalyptic number.

154140450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 154140450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194384880).

154140450 is an abundant number, since it is smaller than the sum of its proper divisors (234629310).

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

154140450 is a wasteful number, since it uses less digits than its factorization.

154140450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17491 (or 17486 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 154140450 is about 12415.3312480981. The cubic root of 154140450 is about 536.1737412003.

The spelling of 154140450 in words is "one hundred fifty-four million, one hundred forty thousand, four hundred fifty".