146240281 has 8 divisors (see below), whose sum is σ = 159854400. Its totient is φ = 132679440.

The previous prime is 146240267. The next prime is 146240309. The reversal of 146240281 is 182042641.

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 146240281 - 2¹⁷ = 146109209 is a prime.

It is a super-2 number, since 2×146240281² = 42772439573917922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146240201) 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, 7461 + ... + 18658.

It is an arithmetic number, because the mean of its divisors is an integer number (19981800).

Almost surely, 2^146240281 is an apocalyptic number.

146240281 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

146240281 is a deficient number, since it is larger than the sum of its proper divisors (13614119).

146240281 is a wasteful number, since it uses less digits than its factorization.

146240281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26639.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 146240281 is about 12092.9847845766. The cubic root of 146240281 is about 526.8524503904.

The spelling of 146240281 in words is "one hundred forty-six million, two hundred forty thousand, two hundred eighty-one".