1554405235242 has 16 divisors (see below), whose sum is σ = 3111740559072. Its totient is φ = 517646730320.

The previous prime is 1554405235219. The next prime is 1554405235247. The reversal of 1554405235242 is 2425325044551.

It is a junction number, because it is equal to n+sod(n) for n = 1554405235194 and 1554405235203.

It is not an unprimeable number, because it can be changed into a prime (1554405235247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122080128 + ... + 122092859.

It is an arithmetic number, because the mean of its divisors is an integer number (194483784942).

Almost surely, 2^{1554405235242} is an apocalyptic number.

1554405235242 is an abundant number, since it is smaller than the sum of its proper divisors (1557335323830).

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

1554405235242 is a wasteful number, since it uses less digits than its factorization.

1554405235242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244174053.

The product of its (nonzero) digits is 960000, while the sum is 42.

The spelling of 1554405235242 in words is "one trillion, five hundred fifty-four billion, four hundred five million, two hundred thirty-five thousand, two hundred forty-two".