154140840 has 128 divisors (see below), whose sum is σ = 587232000. Its totient is φ = 35230464.

The previous prime is 154140827. The next prime is 154140841. The reversal of 154140840 is 48041451.

It is a happy number.

154140840 is a `hidden beast` number, since 1 + 541 + 40 + 84 + 0 = 666.

It is a super-4 number, since 4×154140840⁴ (a number of 34 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (154140841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2635 + ... + 17754.

It is an arithmetic number, because the mean of its divisors is an integer number (4587750).

Almost surely, 2^154140840 is an apocalyptic number.

154140840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 154140840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293616000).

154140840 is an abundant number, since it is smaller than the sum of its proper divisors (433091160).

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

154140840 is a wasteful number, since it uses less digits than its factorization.

154140840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20416 (or 20406 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 154140840 is about 12415.3469544753. The cubic root of 154140840 is about 536.1741934017.

The spelling of 154140840 in words is "one hundred fifty-four million, one hundred forty thousand, eight hundred forty".