1542542550 has 96 divisors (see below), whose sum is σ = 4075989120. Its totient is φ = 384940800.

The previous prime is 1542542489. The next prime is 1542542579. The reversal of 1542542550 is 552452451.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 233290 + ... + 239810.

It is an arithmetic number, because the mean of its divisors is an integer number (42458220).

Almost surely, 2^1542542550 is an apocalyptic number.

1542542550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1542542550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2037994560).

1542542550 is an abundant number, since it is smaller than the sum of its proper divisors (2533446570).

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

1542542550 is a wasteful number, since it uses less digits than its factorization.

1542542550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6638 (or 6633 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 33.

The square root of 1542542550 is about 39275.2154672638. The cubic root of 1542542550 is about 1155.4355284843.

Subtracting from 1542542550 its reverse (552452451), we obtain a palindrome (990090099).

It can be divided in two parts, 15425 and 42550, that added together give a palindrome (57975).

The spelling of 1542542550 in words is "one billion, five hundred forty-two million, five hundred forty-two thousand, five hundred fifty".