154120402144244 has 12 divisors (see below), whose sum is σ = 269729241946500. Its totient is φ = 77054904445248.

The previous prime is 154120402144187. The next prime is 154120402144249. The reversal of 154120402144244 is 442441204021451.

It can be written as a sum of positive squares in 2 ways, for example, as 145820598384400 + 8299803759844 = 12075620^2 + 2880938^2 .

It is a junction number, because it is equal to n+sod(n) for n = 154120402144198 and 154120402144207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154120402144249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1324091249 + ... + 1324207640.

It is an arithmetic number, because the mean of its divisors is an integer number (22477436828875).

Almost surely, 2^{154120402144244} is an apocalyptic number.

It is an amenable number.

154120402144244 is a deficient number, since it is larger than the sum of its proper divisors (115608839802256).

154120402144244 is a wasteful number, since it uses less digits than its factorization.

154120402144244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2648313442 (or 2648313440 counting only the distinct ones).

The product of its (nonzero) digits is 163840, while the sum is 38.

Adding to 154120402144244 its reverse (442441204021451), we get a palindrome (596561606165695).

The spelling of 154120402144244 in words is "one hundred fifty-four trillion, one hundred twenty billion, four hundred two million, one hundred forty-four thousand, two hundred forty-four".