154388242120 has 32 divisors (see below), whose sum is σ = 396998337600. Its totient is φ = 52933111488.

The previous prime is 154388242111. The next prime is 154388242147. The reversal of 154388242120 is 21242883451.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 275693010 + ... + 275693569.

It is an arithmetic number, because the mean of its divisors is an integer number (12406198050).

Almost surely, 2^154388242120 is an apocalyptic number.

154388242120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

154388242120 is an abundant number, since it is smaller than the sum of its proper divisors (242610095480).

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

154388242120 is a wasteful number, since it uses less digits than its factorization.

154388242120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551386597 (or 551386593 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 40.

The spelling of 154388242120 in words is "one hundred fifty-four billion, three hundred eighty-eight million, two hundred forty-two thousand, one hundred twenty".