154142220512240 has 20 divisors (see below), whose sum is σ = 358380662691144. Its totient is φ = 61656888204864.

The previous prime is 154142220512213. The next prime is 154142220512263. The reversal of 154142220512240 is 42215022241451.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 154142220512240.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 963388878122 + ... + 963388878281.

Almost surely, 2^{154142220512240} is an apocalyptic number.

154142220512240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

154142220512240 is an abundant number, since it is smaller than the sum of its proper divisors (204238442178904).

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

154142220512240 is a wasteful number, since it uses less digits than its factorization.

154142220512240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1926777756416 (or 1926777756410 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 35.

Adding to 154142220512240 its reverse (42215022241451), we get a palindrome (196357242753691).

The spelling of 154142220512240 in words is "one hundred fifty-four trillion, one hundred forty-two billion, two hundred twenty million, five hundred twelve thousand, two hundred forty".