154002540040 has 32 divisors (see below), whose sum is σ = 346539879000. Its totient is φ = 61594942464.

The previous prime is 154002540023. The next prime is 154002540073. The reversal of 154002540040 is 40045200451.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 146598625924 + 7403914116 = 382882^2 + 86046^2 .

It is a junction number, because it is equal to n+sod(n) for n = 154002539987 and 154002540014.

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, 232576 + ... + 601744.

Almost surely, 2^154002540040 is an apocalyptic number.

154002540040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

154002540040 is an abundant number, since it is smaller than the sum of its proper divisors (192537338960).

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

154002540040 is a wasteful number, since it uses less digits than its factorization.

154002540040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379609 (or 379605 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

Adding to 154002540040 its reverse (40045200451), we get a palindrome (194047740491).

The spelling of 154002540040 in words is "one hundred fifty-four billion, two million, five hundred forty thousand, forty".