142224501 has 8 divisors (see below), whose sum is σ = 189687904. Its totient is φ = 94788720.

The previous prime is 142224461. The next prime is 142224503. The reversal of 142224501 is 105422241.

142224501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 142224501 - 2¹⁵ = 142191733 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142224503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15486 + ... + 22896.

It is an arithmetic number, because the mean of its divisors is an integer number (23710988).

Almost surely, 2^142224501 is an apocalyptic number.

It is an amenable number.

142224501 is a deficient number, since it is larger than the sum of its proper divisors (47463403).

142224501 is an equidigital number, since it uses as much as digits as its factorization.

142224501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13811.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 142224501 is about 11925.7914202790. The cubic root of 142224501 is about 521.9851399889.

Adding to 142224501 its reverse (105422241), we get a palindrome (247646742).

The spelling of 142224501 in words is "one hundred forty-two million, two hundred twenty-four thousand, five hundred one".