142140305501 has 4 divisors (see below), whose sum is σ = 142934385600. Its totient is φ = 141346225404.

The previous prime is 142140305477. The next prime is 142140305519. The reversal of 142140305501 is 105503041241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142140305501 is a prime.

It is a super-2 number, since 2×142140305501² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142140305551) 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, 397039781 + ... + 397040138.

It is an arithmetic number, because the mean of its divisors is an integer number (35733596400).

Almost surely, 2^142140305501 is an apocalyptic number.

It is an amenable number.

142140305501 is a deficient number, since it is larger than the sum of its proper divisors (794080099).

142140305501 is an equidigital number, since it uses as much as digits as its factorization.

142140305501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794080098.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 142140305501 its reverse (105503041241), we get a palindrome (247643346742).

The spelling of 142140305501 in words is "one hundred forty-two billion, one hundred forty million, three hundred five thousand, five hundred one".