4240406 has 4 divisors (see below), whose sum is σ = 6360612. Its totient is φ = 2120202.

The previous prime is 4240399. The next prime is 4240417. The reversal of 4240406 is 6040424.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060100 + ... + 1060103.

It is an arithmetic number, because the mean of its divisors is an integer number (1590153).

Almost surely, 2^4240406 is an apocalyptic number.

4240406 is a deficient number, since it is larger than the sum of its proper divisors (2120206).

4240406 is a wasteful number, since it uses less digits than its factorization.

4240406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2120205.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 4240406 is about 2059.2246113525. The cubic root of 4240406 is about 161.8586126034.

It can be divided in two parts, 4240 and 406, that multiplied together give a triangular number (1721440 = T₁₈₅₅).

The spelling of 4240406 in words is "four million, two hundred forty thousand, four hundred six".