142005553 has 4 divisors (see below), whose sum is σ = 142136100. Its totient is φ = 141875008.

The previous prime is 142005551. The next prime is 142005557. The reversal of 142005553 is 355500241.

142005553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18173169 + 123832384 = 4263^2 + 11128^2 .

It is a cyclic number.

It is not a de Polignac number, because 142005553 - 2¹ = 142005551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142005551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63628 + ... + 65821.

It is an arithmetic number, because the mean of its divisors is an integer number (35534025).

Almost surely, 2^142005553 is an apocalyptic number.

It is an amenable number.

142005553 is a deficient number, since it is larger than the sum of its proper divisors (130547).

142005553 is a wasteful number, since it uses less digits than its factorization.

142005553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130546.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 142005553 is about 11916.6082842393. The cubic root of 142005553 is about 521.7171451435.

Adding to 142005553 its reverse (355500241), we get a palindrome (497505794).

The spelling of 142005553 in words is "one hundred forty-two million, five thousand, five hundred fifty-three".