142722653 has 4 divisors (see below), whose sum is σ = 146580060. Its totient is φ = 138865248.

The previous prime is 142722617. The next prime is 142722673. The reversal of 142722653 is 356227241.

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 133217764 + 9504889 = 11542^2 + 3083^2 .

It is a cyclic number.

It is not a de Polignac number, because 142722653 - 2⁸ = 142722397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142722673) 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, 1928648 + ... + 1928721.

It is an arithmetic number, because the mean of its divisors is an integer number (36645015).

Almost surely, 2^142722653 is an apocalyptic number.

It is an amenable number.

142722653 is a deficient number, since it is larger than the sum of its proper divisors (3857407).

142722653 is an equidigital number, since it uses as much as digits as its factorization.

142722653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3857406.

The product of its digits is 20160, while the sum is 32.

The square root of 142722653 is about 11946.6586542012. The cubic root of 142722653 is about 522.5938605677.

Adding to 142722653 its reverse (356227241), we get a palindrome (498949894).

The spelling of 142722653 in words is "one hundred forty-two million, seven hundred twenty-two thousand, six hundred fifty-three".