154842840 has 80 divisors (see below), whose sum is σ = 520454880. Its totient is φ = 41290560.

The previous prime is 154842833. The next prime is 154842841. The reversal of 154842840 is 48248451.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 154842795 and 154842804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154842841) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 20656 + ... + 27135.

It is an arithmetic number, because the mean of its divisors is an integer number (6505686).

Almost surely, 2^154842840 is an apocalyptic number.

154842840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

154842840 is an abundant number, since it is smaller than the sum of its proper divisors (365612040).

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

154842840 is a wasteful number, since it uses less digits than its factorization.

154842840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47814 (or 47801 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 36.

The square root of 154842840 is about 12443.5862997771. The cubic root of 154842840 is about 536.9869226864.

The spelling of 154842840 in words is "one hundred fifty-four million, eight hundred forty-two thousand, eight hundred forty".