142204407 has 8 divisors (see below), whose sum is σ = 189769584. Its totient is φ = 94721088.

The previous prime is 142204399. The next prime is 142204411. The reversal of 142204407 is 704402241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 142204407 - 2³ = 142204399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142204457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16288 + ... + 23445.

It is an arithmetic number, because the mean of its divisors is an integer number (23721198).

Almost surely, 2^142204407 is an apocalyptic number.

142204407 is a deficient number, since it is larger than the sum of its proper divisors (47565177).

142204407 is a wasteful number, since it uses less digits than its factorization.

142204407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40929.

The product of its (nonzero) digits is 1792, while the sum is 24.

The square root of 142204407 is about 11924.9489307083. The cubic root of 142204407 is about 521.9605561717.

Adding to 142204407 its reverse (704402241), we get a palindrome (846606648).

The spelling of 142204407 in words is "one hundred forty-two million, two hundred four thousand, four hundred seven".