1542425021540 has 96 divisors (see below), whose sum is σ = 3699919327104. Its totient is φ = 535070545920.

The previous prime is 1542425021521. The next prime is 1542425021563. The reversal of 1542425021540 is 451205242451.

It is a self number, because there is not a number n which added to its sum of digits gives 1542425021540.

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, 2218247 + ... + 2829393.

It is an arithmetic number, because the mean of its divisors is an integer number (38540826324).

Almost surely, 2^{1542425021540} is an apocalyptic number.

1542425021540 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 1542425021540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1849959663552).

1542425021540 is an abundant number, since it is smaller than the sum of its proper divisors (2157494305564).

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

1542425021540 is a wasteful number, since it uses less digits than its factorization.

1542425021540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611757 (or 611755 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 35.

The spelling of 1542425021540 in words is "one trillion, five hundred forty-two billion, four hundred twenty-five million, twenty-one thousand, five hundred forty".