240375421 has 32 divisors (see below), whose sum is σ = 292795776. Its totient is φ = 194400000.

The previous prime is 240375419. The next prime is 240375439. The reversal of 240375421 is 124573042.

It is the 6330-th star number.

It is a 5-Lehmer number, since φ(240375421) divides (240375421-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 240375421 - 2¹ = 240375419 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 240375421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240375451) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 957546 + ... + 957796.

It is an arithmetic number, because the mean of its divisors is an integer number (9149868).

Almost surely, 2^240375421 is an apocalyptic number.

It is an amenable number.

240375421 is a deficient number, since it is larger than the sum of its proper divisors (52420355).

240375421 is a wasteful number, since it uses less digits than its factorization.

240375421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 240375421 is about 15504.0453108213. The cubic root of 240375421 is about 621.7703658069.

The spelling of 240375421 in words is "two hundred forty million, three hundred seventy-five thousand, four hundred twenty-one".