142209241 has 8 divisors (see below), whose sum is σ = 146824704. Its totient is φ = 137634480.

The previous prime is 142209191. The next prime is 142209247. The reversal of 142209241 is 142902241.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142209241 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (142209247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2995 + ... + 17128.

It is an arithmetic number, because the mean of its divisors is an integer number (18353088).

Almost surely, 2^142209241 is an apocalyptic number.

It is an amenable number.

142209241 is a deficient number, since it is larger than the sum of its proper divisors (4615463).

142209241 is a wasteful number, since it uses less digits than its factorization.

142209241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20351.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 142209241 is about 11925.1516132920. The cubic root of 142209241 is about 521.9664704955.

The spelling of 142209241 in words is "one hundred forty-two million, two hundred nine thousand, two hundred forty-one".