142993807 has 6 divisors (see below), whose sum is σ = 157175144. Its totient is φ = 129994260.

The previous prime is 142993777. The next prime is 142993813. The reversal of 142993807 is 708399241.

142993807 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 142993807 - 2¹⁹ = 142469519 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 (142993847) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 590763 + ... + 591004.

Almost surely, 2^142993807 is an apocalyptic number.

142993807 is a deficient number, since it is larger than the sum of its proper divisors (14181337).

142993807 is a wasteful number, since it uses less digits than its factorization.

142993807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1181789 (or 1181778 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 142993807 is about 11958.0017979594. The cubic root of 142993807 is about 522.9246040717.

Subtracting from 142993807 its sum of digits (43), we obtain a square (142993764 = 11958²).

The spelling of 142993807 in words is "one hundred forty-two million, nine hundred ninety-three thousand, eight hundred seven".