240102261 has 12 divisors (see below), whose sum is σ = 396359392. Its totient is φ = 137201256.

The previous prime is 240102241. The next prime is 240102293. The reversal of 240102261 is 162201042.

240102261 is a `hidden beast` number, since 2 + 401 + 0 + 2 + 261 = 666.

It is not a de Polignac number, because 240102261 - 2⁷ = 240102133 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 (240102241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1905511 + ... + 1905636.

Almost surely, 2^240102261 is an apocalyptic number.

240102261 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

240102261 is a deficient number, since it is larger than the sum of its proper divisors (156257131).

240102261 is a wasteful number, since it uses less digits than its factorization.

240102261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3811160 (or 3811157 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 240102261 is about 15495.2334929165. The cubic root of 240102261 is about 621.5347521864.

The spelling of 240102261 in words is "two hundred forty million, one hundred two thousand, two hundred sixty-one".