1554263042442 has 128 divisors (see below), whose sum is σ = 3467346462720. Its totient is φ = 460528727040.

The previous prime is 1554263042429. The next prime is 1554263042443. The reversal of 1554263042442 is 2442403624551.

It is a junction number, because it is equal to n+sod(n) for n = 1554263042394 and 1554263042403.

It is not an unprimeable number, because it can be changed into a prime (1554263042443) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 329081493 + ... + 329086215.

It is an arithmetic number, because the mean of its divisors is an integer number (27088644240).

Almost surely, 2^{1554263042442} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1554263042442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1733673231360).

1554263042442 is an abundant number, since it is smaller than the sum of its proper divisors (1913083420278).

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

1554263042442 is a wasteful number, since it uses less digits than its factorization.

1554263042442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5388.

The product of its (nonzero) digits is 921600, while the sum is 42.

Adding to 1554263042442 its reverse (2442403624551), we get a palindrome (3996666666993).

The spelling of 1554263042442 in words is "one trillion, five hundred fifty-four billion, two hundred sixty-three million, forty-two thousand, four hundred forty-two".