142921477 has 8 divisors (see below), whose sum is σ = 150567200. Its totient is φ = 135288144.

The previous prime is 142921469. The next prime is 142921487. The reversal of 142921477 is 774129241.

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

It is a cyclic number.

It is not a de Polignac number, because 142921477 - 2³ = 142921469 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 (142921447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29458 + ... + 33964.

It is an arithmetic number, because the mean of its divisors is an integer number (18820900).

Almost surely, 2^142921477 is an apocalyptic number.

It is an amenable number.

142921477 is a deficient number, since it is larger than the sum of its proper divisors (7645723).

142921477 is a wasteful number, since it uses less digits than its factorization.

142921477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6195.

The product of its digits is 28224, while the sum is 37.

The square root of 142921477 is about 11954.9770806974. The cubic root of 142921477 is about 522.8364195633.

The spelling of 142921477 in words is "one hundred forty-two million, nine hundred twenty-one thousand, four hundred seventy-seven".