142206474 has 8 divisors (see below), whose sum is σ = 284412960. Its totient is φ = 47402156.

The previous prime is 142206457. The next prime is 142206497. The reversal of 142206474 is 474602241.

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

142206474 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11850534 + ... + 11850545.

It is an arithmetic number, because the mean of its divisors is an integer number (35551620).

Almost surely, 2^142206474 is an apocalyptic number.

142206474 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142206474 is a wasteful number, since it uses less digits than its factorization.

142206474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23701084.

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 142206474 is about 11925.0355974311. The cubic root of 142206474 is about 521.9630851304.

The spelling of 142206474 in words is "one hundred forty-two million, two hundred six thousand, four hundred seventy-four".