142641901 has 8 divisors (see below), whose sum is σ = 143637624. Its totient is φ = 141649920.

The previous prime is 142641893. The next prime is 142641931. The reversal of 142641901 is 109146241.

It can be written as a sum of positive squares in 4 ways, for example, as 54375876 + 88266025 = 7374^2 + 9395^2 .

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 142641901 - 2³ = 142641893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142641901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142641931) 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, 133911 + ... + 134971.

It is an arithmetic number, because the mean of its divisors is an integer number (17954703).

Almost surely, 2^142641901 is an apocalyptic number.

It is an amenable number.

142641901 is a deficient number, since it is larger than the sum of its proper divisors (995723).

142641901 is a wasteful number, since it uses less digits than its factorization.

142641901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1871.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 142641901 is about 11943.2784862449. The cubic root of 142641901 is about 522.4952813536.

The spelling of 142641901 in words is "one hundred forty-two million, six hundred forty-one thousand, nine hundred one".