1554061242420 has 288 divisors, whose sum is σ = 4896488862720. Its totient is φ = 398546749440.

The previous prime is 1554061242413. The next prime is 1554061242421. The reversal of 1554061242420 is 242421604551.

1554061242420 is a `hidden beast` number, since 1 + 5 + 5 + 406 + 1 + 2 + 4 + 242 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1554061242421) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 984205191 + ... + 984206769.

It is an arithmetic number, because the mean of its divisors is an integer number (17001697440).

Almost surely, 2^{1554061242420} is an apocalyptic number.

1554061242420 is a gapful number since it is divisible by the number (10) 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 1554061242420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2448244431360).

1554061242420 is an abundant number, since it is smaller than the sum of its proper divisors (3342427620300).

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

1554061242420 is a wasteful number, since it uses less digits than its factorization.

1554061242420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2615 (or 2610 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

Adding to 1554061242420 its reverse (242421604551), we get a palindrome (1796482846971).

The spelling of 1554061242420 in words is "one trillion, five hundred fifty-four billion, sixty-one million, two hundred forty-two thousand, four hundred twenty".