142386993 has 72 divisors (see below), whose sum is σ = 249924480. Its totient is φ = 77837760.

The previous prime is 142386983. The next prime is 142387051. The reversal of 142386993 is 399683241.

It is a happy number.

142386993 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 142386993 - 2⁵ = 142386961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142386943) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1802328 + ... + 1802406.

Almost surely, 2^142386993 is an apocalyptic number.

It is an amenable number.

142386993 is a deficient number, since it is larger than the sum of its proper divisors (107537487).

142386993 is a wasteful number, since it uses less digits than its factorization.

142386993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227 (or 217 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 142386993 is about 11932.6021051571. The cubic root of 142386993 is about 522.1838542926.

The spelling of 142386993 in words is "one hundred forty-two million, three hundred eighty-six thousand, nine hundred ninety-three".