142720554 has 8 divisors (see below), whose sum is σ = 285441120. Its totient is φ = 47573516.

The previous prime is 142720553. The next prime is 142720561. The reversal of 142720554 is 455027241.

It is a sphenic number, since it is the product of 3 distinct primes.

142720554 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (142720553) 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, 11893374 + ... + 11893385.

It is an arithmetic number, because the mean of its divisors is an integer number (35680140).

Almost surely, 2^142720554 is an apocalyptic number.

142720554 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

142720554 is a wasteful number, since it uses less digits than its factorization.

142720554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23786764.

The product of its (nonzero) digits is 11200, while the sum is 30.

The square root of 142720554 is about 11946.5708050469. The cubic root of 142720554 is about 522.5912986527.

Adding to 142720554 its reverse (455027241), we get a palindrome (597747795).

The spelling of 142720554 in words is "one hundred forty-two million, seven hundred twenty thousand, five hundred fifty-four".