154126640 has 40 divisors (see below), whose sum is σ = 362387520. Its totient is φ = 60955136.

The previous prime is 154126639. The next prime is 154126649. The reversal of 154126640 is 46621451.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (154126649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3704 + ... + 17943.

It is an arithmetic number, because the mean of its divisors is an integer number (9059688).

Almost surely, 2^154126640 is an apocalyptic number.

154126640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

154126640 is an abundant number, since it is smaller than the sum of its proper divisors (208260880).

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

154126640 is a wasteful number, since it uses less digits than its factorization.

154126640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21749 (or 21743 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 154126640 is about 12414.7750684416. The cubic root of 154126640 is about 536.1577281410.

The spelling of 154126640 in words is "one hundred fifty-four million, one hundred twenty-six thousand, six hundred forty".