2154142332240 has 160 divisors (see below), whose sum is σ = 6761281821696. Its totient is φ = 567297024000.

The previous prime is 2154142332211. The next prime is 2154142332257. The reversal of 2154142332240 is 422332414512.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7368865 + ... + 7655615.

Almost surely, 2^{2154142332240} is an apocalyptic number.

2154142332240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2154142332240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3380640910848).

2154142332240 is an abundant number, since it is smaller than the sum of its proper divisors (4607139489456).

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

2154142332240 is a wasteful number, since it uses less digits than its factorization.

2154142332240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287157 (or 287151 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 33.

Adding to 2154142332240 its reverse (422332414512), we get a palindrome (2576474746752).

The spelling of 2154142332240 in words is "two trillion, one hundred fifty-four billion, one hundred forty-two million, three hundred thirty-two thousand, two hundred forty".