142715207421 has 20 divisors (see below), whose sum is σ = 220543299900. Its totient is φ = 91862660736.

The previous prime is 142715207413. The next prime is 142715207423. The reversal of 142715207421 is 124702517241.

142715207421 is a `hidden beast` number, since 1 + 4 + 27 + 1 + 5 + 207 + 421 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 80137683396 + 62577524025 = 283086^2 + 250155^2 .

It is not a de Polignac number, because 142715207421 - 2³ = 142715207413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142715207423) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 30375516 + ... + 30380213.

It is an arithmetic number, because the mean of its divisors is an integer number (11027164995).

Almost surely, 2^142715207421 is an apocalyptic number.

It is an amenable number.

142715207421 is a deficient number, since it is larger than the sum of its proper divisors (77828092479).

142715207421 is an equidigital number, since it uses as much as digits as its factorization.

142715207421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60755770 (or 60755761 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The spelling of 142715207421 in words is "one hundred forty-two billion, seven hundred fifteen million, two hundred seven thousand, four hundred twenty-one".