1554040142120 has 16 divisors (see below), whose sum is σ = 3496590319860. Its totient is φ = 621616056832.

The previous prime is 1554040142117. The next prime is 1554040142183. The reversal of 1554040142120 is 212410404551.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1474422490564 + 79617651556 = 1214258^2 + 282166^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19425501737 + ... + 19425501816.

Almost surely, 2^{1554040142120} is an apocalyptic number.

1554040142120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1554040142120 is an abundant number, since it is smaller than the sum of its proper divisors (1942550177740).

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

1554040142120 is a wasteful number, since it uses less digits than its factorization.

1554040142120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38851003564 (or 38851003560 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

Adding to 1554040142120 its reverse (212410404551), we get a palindrome (1766450546671).

The spelling of 1554040142120 in words is "one trillion, five hundred fifty-four billion, forty million, one hundred forty-two thousand, one hundred twenty".