142405134857 has 4 divisors (see below), whose sum is σ = 142509309696. Its totient is φ = 142300960020.

The previous prime is 142405134841. The next prime is 142405134901. The reversal of 142405134857 is 758431504241.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 758431504241 = 863 ⋅878831407.

It is a cyclic number.

It is not a de Polignac number, because 142405134857 - 2⁴ = 142405134841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142405134457) 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, 52085369 + ... + 52088102.

It is an arithmetic number, because the mean of its divisors is an integer number (35627327424).

Almost surely, 2^142405134857 is an apocalyptic number.

It is an amenable number.

142405134857 is a deficient number, since it is larger than the sum of its proper divisors (104174839).

142405134857 is a wasteful number, since it uses less digits than its factorization.

142405134857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104174838.

The product of its (nonzero) digits is 537600, while the sum is 44.

The spelling of 142405134857 in words is "one hundred forty-two billion, four hundred five million, one hundred thirty-four thousand, eight hundred fifty-seven".