142055407 has 8 divisors (see below), whose sum is σ = 153172880. Its totient is φ = 130965120.

The previous prime is 142055401. The next prime is 142055411. The reversal of 142055407 is 704550241.

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

It is not a de Polignac number, because 142055407 - 2³ = 142055399 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 (142055401) 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, 4807 + ... + 17527.

It is an arithmetic number, because the mean of its divisors is an integer number (19146610).

Almost surely, 2^142055407 is an apocalyptic number.

142055407 is a deficient number, since it is larger than the sum of its proper divisors (11117473).

142055407 is a wasteful number, since it uses less digits than its factorization.

142055407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13593.

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 142055407 is about 11918.6998871521. The cubic root of 142055407 is about 521.7781912150.

The spelling of 142055407 in words is "one hundred forty-two million, fifty-five thousand, four hundred seven".