154400140 has 24 divisors (see below), whose sum is σ = 325542672. Its totient is φ = 61512000.

The previous prime is 154400117. The next prime is 154400167. The reversal of 154400140 is 41004451.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10359 + ... + 20398.

It is an arithmetic number, because the mean of its divisors is an integer number (13564278).

Almost surely, 2^154400140 is an apocalyptic number.

154400140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

154400140 is an abundant number, since it is smaller than the sum of its proper divisors (171142532).

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

154400140 is a wasteful number, since it uses less digits than its factorization.

154400140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31017 (or 31015 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 154400140 is about 12425.7852870553. The cubic root of 154400140 is about 536.4746806728.

Adding to 154400140 its reverse (41004451), we get a palindrome (195404591).

The spelling of 154400140 in words is "one hundred fifty-four million, four hundred thousand, one hundred forty".