142204520436 has 96 divisors (see below), whose sum is σ = 384726451200. Its totient is φ = 40427838720.

The previous prime is 142204520411. The next prime is 142204520461. The reversal of 142204520436 is 634025402241.

It is an interprime number because it is at equal distance from previous prime (142204520411) and next prime (142204520461).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 142204520397 and 142204520406.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 16921 + ... + 533568.

It is an arithmetic number, because the mean of its divisors is an integer number (4007567200).

Almost surely, 2^142204520436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142204520436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192363225600).

142204520436 is an abundant number, since it is smaller than the sum of its proper divisors (242521930764).

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

142204520436 is a wasteful number, since it uses less digits than its factorization.

142204520436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550629 (or 550627 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 33.

Adding to 142204520436 its reverse (634025402241), we get a palindrome (776229922677).

The spelling of 142204520436 in words is "one hundred forty-two billion, two hundred four million, five hundred twenty thousand, four hundred thirty-six".