242666040 has 32 divisors (see below), whose sum is σ = 727998480. Its totient is φ = 64710912.

The previous prime is 242666023. The next prime is 242666051. The reversal of 242666040 is 40666242.

242666040 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 242665989 and 242666007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1010989 + ... + 1011228.

Almost surely, 2^242666040 is an apocalyptic number.

242666040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242666040 is an abundant number, since it is smaller than the sum of its proper divisors (485332440).

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

242666040 is a wasteful number, since it uses less digits than its factorization.

242666040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2022231 (or 2022227 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 242666040 is about 15577.7418132411. The cubic root of 242666040 is about 623.7391455709.

The spelling of 242666040 in words is "two hundred forty-two million, six hundred sixty-six thousand, forty".